Home / 388,306,612.65-535,859,588.07-212,094,561.36

Finding the Fourth Proportional to 388,306,612.65, 535,859,588.07 and 212,094,561.36

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Solution

The fourth proportional to 388,306,612.65, 535,859,588.07 and 212,094,561.36 is: 292,688,562.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,306,612.65 : 535,859,588.07 = 212,094,561.36 : x
  2. Step 2: Convert to fraction form
    388,306,612.65/535,859,588.07 = 212,094,561.36/x
  3. Step 3: Cross multiply
    388,306,612.65x = 535,859,588.07 × 212,094,561.36
  4. Step 4: Simplify right side
    388,306,612.65x = 113,652,904,282,256,944
  5. Step 5: Solve for x
    x = 113,652,904,282,256,944/388,306,612.65
  6. Step 6: Final answer
    x = 292,688,562.54

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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.