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Finding the Fourth Proportional to 488,478.40, 732,498.90 and 188,859.40

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Solution

The fourth proportional to 488,478.40, 732,498.90 and 188,859.40 is: 283,204.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    488,478.40 : 732,498.90 = 188,859.40 : x
  2. Step 2: Convert to fraction form
    488,478.40/732,498.90 = 188,859.40/x
  3. Step 3: Cross multiply
    488,478.40x = 732,498.90 × 188,859.40
  4. Step 4: Simplify right side
    488,478.40x = 138,339,302,754.66
  5. Step 5: Solve for x
    x = 138,339,302,754.66/488,478.40
  6. Step 6: Final answer
    x = 283,204.54

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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.