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Finding the Fourth Proportional to 340,397.57, 469,744.79 and 187,432.58

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Solution

The fourth proportional to 340,397.57, 469,744.79 and 187,432.58 is: 258,654.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,397.57 : 469,744.79 = 187,432.58 : x
  2. Step 2: Convert to fraction form
    340,397.57/469,744.79 = 187,432.58/x
  3. Step 3: Cross multiply
    340,397.57x = 469,744.79 × 187,432.58
  4. Step 4: Simplify right side
    340,397.57x = 88,045,474,645.37
  5. Step 5: Solve for x
    x = 88,045,474,645.37/340,397.57
  6. Step 6: Final answer
    x = 258,654.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.