Home / 388,987,859,753.28-536,820,023,129.76-215,372,997,810

Finding the Fourth Proportional to 388,987,859,753.28, 536,820,023,129.76 and 215,372,997,810

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Solution

The fourth proportional to 388,987,859,753.28, 536,820,023,129.76 and 215,372,997,810 is: 297,224,025,806.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,987,859,753.28 : 536,820,023,129.76 = 215,372,997,810 : x
  2. Step 2: Convert to fraction form
    388,987,859,753.28/536,820,023,129.76 = 215,372,997,810/x
  3. Step 3: Cross multiply
    388,987,859,753.28x = 536,820,023,129.76 × 215,372,997,810
  4. Step 4: Simplify right side
    388,987,859,753.28x = 115,616,537,665,889,953,120,256
  5. Step 5: Solve for x
    x = 115,616,537,665,889,953,120,256/388,987,859,753.28
  6. Step 6: Final answer
    x = 297,224,025,806.93

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.