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Finding the Fourth Proportional to 485,323.96, 727,987.86 and 148,363.36

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Solution

The fourth proportional to 485,323.96, 727,987.86 and 148,363.36 is: 222,545.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,323.96 : 727,987.86 = 148,363.36 : x
  2. Step 2: Convert to fraction form
    485,323.96/727,987.86 = 148,363.36/x
  3. Step 3: Cross multiply
    485,323.96x = 727,987.86 × 148,363.36
  4. Step 4: Simplify right side
    485,323.96x = 108,006,724,948.81
  5. Step 5: Solve for x
    x = 108,006,724,948.81/485,323.96
  6. Step 6: Final answer
    x = 222,545.63

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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.