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Finding the Fourth Proportional to 610,479.88, 915,875.42 and 189,759.40

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Solution

The fourth proportional to 610,479.88, 915,875.42 and 189,759.40 is: 284,687.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    610,479.88 : 915,875.42 = 189,759.40 : x
  2. Step 2: Convert to fraction form
    610,479.88/915,875.42 = 189,759.40/x
  3. Step 3: Cross multiply
    610,479.88x = 915,875.42 × 189,759.40
  4. Step 4: Simplify right side
    610,479.88x = 173,795,970,173.95
  5. Step 5: Solve for x
    x = 173,795,970,173.95/610,479.88
  6. Step 6: Final answer
    x = 284,687.47

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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.