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Finding the Fourth Proportional to 659,774.88, 989,663.28 and 238,952.16

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Solution

The fourth proportional to 659,774.88, 989,663.28 and 238,952.16 is: 358,428.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,774.88 : 989,663.28 = 238,952.16 : x
  2. Step 2: Convert to fraction form
    659,774.88/989,663.28 = 238,952.16/x
  3. Step 3: Cross multiply
    659,774.88x = 989,663.28 × 238,952.16
  4. Step 4: Simplify right side
    659,774.88x = 236,482,178,428.69
  5. Step 5: Solve for x
    x = 236,482,178,428.69/659,774.88
  6. Step 6: Final answer
    x = 358,428.59

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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.