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Finding the Fourth Proportional to 608,139.40, 911,903.10 and 187,360.60

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Solution

The fourth proportional to 608,139.40, 911,903.10 and 187,360.60 is: 280,946.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    608,139.40 : 911,903.10 = 187,360.60 : x
  2. Step 2: Convert to fraction form
    608,139.40/911,903.10 = 187,360.60/x
  3. Step 3: Cross multiply
    608,139.40x = 911,903.10 × 187,360.60
  4. Step 4: Simplify right side
    608,139.40x = 170,854,711,957.86
  5. Step 5: Solve for x
    x = 170,854,711,957.86/608,139.40
  6. Step 6: Final answer
    x = 280,946.62

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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.