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Finding the Fourth Proportional to 402,937.20, 604,871.40 and 216,313.20

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Solution

The fourth proportional to 402,937.20, 604,871.40 and 216,313.20 is: 324,719.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,937.20 : 604,871.40 = 216,313.20 : x
  2. Step 2: Convert to fraction form
    402,937.20/604,871.40 = 216,313.20/x
  3. Step 3: Cross multiply
    402,937.20x = 604,871.40 × 216,313.20
  4. Step 4: Simplify right side
    402,937.20x = 130,841,668,122.48
  5. Step 5: Solve for x
    x = 130,841,668,122.48/402,937.20
  6. Step 6: Final answer
    x = 324,719.75

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.