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Finding the Fourth Proportional to 478,877.56, 718,421.46 and 141,944.20

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Solution

The fourth proportional to 478,877.56, 718,421.46 and 141,944.20 is: 212,947.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,877.56 : 718,421.46 = 141,944.20 : x
  2. Step 2: Convert to fraction form
    478,877.56/718,421.46 = 141,944.20/x
  3. Step 3: Cross multiply
    478,877.56x = 718,421.46 × 141,944.20
  4. Step 4: Simplify right side
    478,877.56x = 101,975,759,402.53
  5. Step 5: Solve for x
    x = 101,975,759,402.53/478,877.56
  6. Step 6: Final answer
    x = 212,947.46

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1.5x scale

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.