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Finding the Fourth Proportional to 521,151.75, 719,189.42 and 282,687.75

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Solution

The fourth proportional to 521,151.75, 719,189.42 and 282,687.75 is: 390,109.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,151.75 : 719,189.42 = 282,687.75 : x
  2. Step 2: Convert to fraction form
    521,151.75/719,189.42 = 282,687.75/x
  3. Step 3: Cross multiply
    521,151.75x = 719,189.42 × 282,687.75
  4. Step 4: Simplify right side
    521,151.75x = 203,306,037,550.17
  5. Step 5: Solve for x
    x = 203,306,037,550.17/521,151.75
  6. Step 6: Final answer
    x = 390,109.10

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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.