Home / 387,916.05-535,277.13-215,793.34

Finding the Fourth Proportional to 387,916.05, 535,277.13 and 215,793.34

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Solution

The fourth proportional to 387,916.05, 535,277.13 and 215,793.34 is: 297,768.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,916.05 : 535,277.13 = 215,793.34 : x
  2. Step 2: Convert to fraction form
    387,916.05/535,277.13 = 215,793.34/x
  3. Step 3: Cross multiply
    387,916.05x = 535,277.13 × 215,793.34
  4. Step 4: Simplify right side
    387,916.05x = 115,509,240,887.12
  5. Step 5: Solve for x
    x = 115,509,240,887.12/387,916.05
  6. Step 6: Final answer
    x = 297,768.66

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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.