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Finding the Fourth Proportional to 391,590.12, 587,460.78 and 166,946.76

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Solution

The fourth proportional to 391,590.12, 587,460.78 and 166,946.76 is: 250,452.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,590.12 : 587,460.78 = 166,946.76 : x
  2. Step 2: Convert to fraction form
    391,590.12/587,460.78 = 166,946.76/x
  3. Step 3: Cross multiply
    391,590.12x = 587,460.78 × 166,946.76
  4. Step 4: Simplify right side
    391,590.12x = 98,074,673,848.07
  5. Step 5: Solve for x
    x = 98,074,673,848.07/391,590.12
  6. Step 6: Final answer
    x = 250,452.37

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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.