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Finding the Fourth Proportional to 478,898, 718,350.60 and 212,586.92

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Solution

The fourth proportional to 478,898, 718,350.60 and 212,586.92 is: 318,881.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,898 : 718,350.60 = 212,586.92 : x
  2. Step 2: Convert to fraction form
    478,898/718,350.60 = 212,586.92/x
  3. Step 3: Cross multiply
    478,898x = 718,350.60 × 212,586.92
  4. Step 4: Simplify right side
    478,898x = 152,711,941,534.15
  5. Step 5: Solve for x
    x = 152,711,941,534.15/478,898
  6. Step 6: Final answer
    x = 318,881.98

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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.