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Finding the Fourth Proportional to 659,689.66, 989,532.06 and 238,867.12

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Solution

The fourth proportional to 659,689.66, 989,532.06 and 238,867.12 is: 358,299.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,689.66 : 989,532.06 = 238,867.12 : x
  2. Step 2: Convert to fraction form
    659,689.66/989,532.06 = 238,867.12/x
  3. Step 3: Cross multiply
    659,689.66x = 989,532.06 × 238,867.12
  4. Step 4: Simplify right side
    659,689.66x = 236,366,673,319.87
  5. Step 5: Solve for x
    x = 236,366,673,319.87/659,689.66
  6. Step 6: Final answer
    x = 358,299.80

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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.