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Finding the Fourth Proportional to 288,530.29, 432,638.09 and 88,797.66

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Solution

The fourth proportional to 288,530.29, 432,638.09 and 88,797.66 is: 133,148.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,530.29 : 432,638.09 = 88,797.66 : x
  2. Step 2: Convert to fraction form
    288,530.29/432,638.09 = 88,797.66/x
  3. Step 3: Cross multiply
    288,530.29x = 432,638.09 × 88,797.66
  4. Step 4: Simplify right side
    288,530.29x = 38,417,250,018.87
  5. Step 5: Solve for x
    x = 38,417,250,018.87/288,530.29
  6. Step 6: Final answer
    x = 133,148.07

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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.