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Finding the Fourth Proportional to 477,515.92, 716,196.01 and 140,477.78

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Solution

The fourth proportional to 477,515.92, 716,196.01 and 140,477.78 is: 210,693.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    477,515.92 : 716,196.01 = 140,477.78 : x
  2. Step 2: Convert to fraction form
    477,515.92/716,196.01 = 140,477.78/x
  3. Step 3: Cross multiply
    477,515.92x = 716,196.01 × 140,477.78
  4. Step 4: Simplify right side
    477,515.92x = 100,609,625,529.66
  5. Step 5: Solve for x
    x = 100,609,625,529.66/477,515.92
  6. Step 6: Final answer
    x = 210,693.76

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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.