Home / 466,101.20-643,279.56-315,189.20

Finding the Fourth Proportional to 466,101.20, 643,279.56 and 315,189.20

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Solution

The fourth proportional to 466,101.20, 643,279.56 and 315,189.20 is: 435,001.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    466,101.20 : 643,279.56 = 315,189.20 : x
  2. Step 2: Convert to fraction form
    466,101.20/643,279.56 = 315,189.20/x
  3. Step 3: Cross multiply
    466,101.20x = 643,279.56 × 315,189.20
  4. Step 4: Simplify right side
    466,101.20x = 202,754,769,892.75
  5. Step 5: Solve for x
    x = 202,754,769,892.75/466,101.20
  6. Step 6: Final answer
    x = 435,001.60

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1.5x scale

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.