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Finding the Fourth Proportional to 478,375.81, 717,545.73 and 118,547.70

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Solution

The fourth proportional to 478,375.81, 717,545.73 and 118,547.70 is: 177,817.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,375.81 : 717,545.73 = 118,547.70 : x
  2. Step 2: Convert to fraction form
    478,375.81/717,545.73 = 118,547.70/x
  3. Step 3: Cross multiply
    478,375.81x = 717,545.73 × 118,547.70
  4. Step 4: Simplify right side
    478,375.81x = 85,063,397,267.83
  5. Step 5: Solve for x
    x = 85,063,397,267.83/478,375.81
  6. Step 6: Final answer
    x = 177,817.10

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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.