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Finding the Fourth Proportional to 288,381.30, 432,645.79 and 88,703.40

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Solution

The fourth proportional to 288,381.30, 432,645.79 and 88,703.40 is: 133,077.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,381.30 : 432,645.79 = 88,703.40 : x
  2. Step 2: Convert to fraction form
    288,381.30/432,645.79 = 88,703.40/x
  3. Step 3: Cross multiply
    288,381.30x = 432,645.79 × 88,703.40
  4. Step 4: Simplify right side
    288,381.30x = 38,377,152,568.69
  5. Step 5: Solve for x
    x = 38,377,152,568.69/288,381.30
  6. Step 6: Final answer
    x = 133,077.81

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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.