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Finding the Fourth Proportional to 488,759.40, 732,920.40 and 189,140.40

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Solution

The fourth proportional to 488,759.40, 732,920.40 and 189,140.40 is: 283,625.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    488,759.40 : 732,920.40 = 189,140.40 : x
  2. Step 2: Convert to fraction form
    488,759.40/732,920.40 = 189,140.40/x
  3. Step 3: Cross multiply
    488,759.40x = 732,920.40 × 189,140.40
  4. Step 4: Simplify right side
    488,759.40x = 138,624,857,624.16
  5. Step 5: Solve for x
    x = 138,624,857,624.16/488,759.40
  6. Step 6: Final answer
    x = 283,625.97

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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.