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Finding the Fourth Proportional to 478,641.67, 718,047.90 and 158,812.73

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Solution

The fourth proportional to 478,641.67, 718,047.90 and 158,812.73 is: 238,247.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,641.67 : 718,047.90 = 158,812.73 : x
  2. Step 2: Convert to fraction form
    478,641.67/718,047.90 = 158,812.73/x
  3. Step 3: Cross multiply
    478,641.67x = 718,047.90 × 158,812.73
  4. Step 4: Simplify right side
    478,641.67x = 114,035,146,475.70
  5. Step 5: Solve for x
    x = 114,035,146,475.70/478,641.67
  6. Step 6: Final answer
    x = 238,247.43

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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.