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Finding the Fourth Proportional to 488,736.40, 732,885.90 and 189,117.40

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Solution

The fourth proportional to 488,736.40, 732,885.90 and 189,117.40 is: 283,591.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    488,736.40 : 732,885.90 = 189,117.40 : x
  2. Step 2: Convert to fraction form
    488,736.40/732,885.90 = 189,117.40/x
  3. Step 3: Cross multiply
    488,736.40x = 732,885.90 × 189,117.40
  4. Step 4: Simplify right side
    488,736.40x = 138,601,475,904.66
  5. Step 5: Solve for x
    x = 138,601,475,904.66/488,736.40
  6. Step 6: Final answer
    x = 283,591.47

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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.