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Finding the Fourth Proportional to 661,095.36, 991,380 and 240,141.12

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Solution

The fourth proportional to 661,095.36, 991,380 and 240,141.12 is: 360,116.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,095.36 : 991,380 = 240,141.12 : x
  2. Step 2: Convert to fraction form
    661,095.36/991,380 = 240,141.12/x
  3. Step 3: Cross multiply
    661,095.36x = 991,380 × 240,141.12
  4. Step 4: Simplify right side
    661,095.36x = 238,071,103,545.60
  5. Step 5: Solve for x
    x = 238,071,103,545.60/661,095.36
  6. Step 6: Final answer
    x = 360,116.13

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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.