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Finding the Fourth Proportional to 660,126.92, 989,584.14 and 239,301.32

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Solution

The fourth proportional to 660,126.92, 989,584.14 and 239,301.32 is: 358,732.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,126.92 : 989,584.14 = 239,301.32 : x
  2. Step 2: Convert to fraction form
    660,126.92/989,584.14 = 239,301.32/x
  3. Step 3: Cross multiply
    660,126.92x = 989,584.14 × 239,301.32
  4. Step 4: Simplify right side
    660,126.92x = 236,808,790,953.07
  5. Step 5: Solve for x
    x = 236,808,790,953.07/660,126.92
  6. Step 6: Final answer
    x = 358,732.21

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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.