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Finding the Fourth Proportional to 258,046.12, 387,114.54 and 117,818.92

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Solution

The fourth proportional to 258,046.12, 387,114.54 and 117,818.92 is: 176,749.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,046.12 : 387,114.54 = 117,818.92 : x
  2. Step 2: Convert to fraction form
    258,046.12/387,114.54 = 117,818.92/x
  3. Step 3: Cross multiply
    258,046.12x = 387,114.54 × 117,818.92
  4. Step 4: Simplify right side
    258,046.12x = 45,609,417,019.10
  5. Step 5: Solve for x
    x = 45,609,417,019.10/258,046.12
  6. Step 6: Final answer
    x = 176,749.09

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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.