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Finding the Fourth Proportional to 458,789.88, 688,191.75 and 159,279.98

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Solution

The fourth proportional to 458,789.88, 688,191.75 and 159,279.98 is: 238,922.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    458,789.88 : 688,191.75 = 159,279.98 : x
  2. Step 2: Convert to fraction form
    458,789.88/688,191.75 = 159,279.98/x
  3. Step 3: Cross multiply
    458,789.88x = 688,191.75 × 159,279.98
  4. Step 4: Simplify right side
    458,789.88x = 109,615,168,176.17
  5. Step 5: Solve for x
    x = 109,615,168,176.17/458,789.88
  6. Step 6: Final answer
    x = 238,922.38

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1.5x scale

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.