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Finding the Fourth Proportional to 258,327.74, 387,332.84 and 89,808.86

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Solution

The fourth proportional to 258,327.74, 387,332.84 and 89,808.86 is: 134,658.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,327.74 : 387,332.84 = 89,808.86 : x
  2. Step 2: Convert to fraction form
    258,327.74/387,332.84 = 89,808.86/x
  3. Step 3: Cross multiply
    258,327.74x = 387,332.84 × 89,808.86
  4. Step 4: Simplify right side
    258,327.74x = 34,785,920,800.96
  5. Step 5: Solve for x
    x = 34,785,920,800.96/258,327.74
  6. Step 6: Final answer
    x = 134,658.09

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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.