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Finding the Fourth Proportional to 288,603.55, 432,912.71 and 136,765.00

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Solution

The fourth proportional to 288,603.55, 432,912.71 and 136,765.00 is: 205,151.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,603.55 : 432,912.71 = 136,765.00 : x
  2. Step 2: Convert to fraction form
    288,603.55/432,912.71 = 136,765.00/x
  3. Step 3: Cross multiply
    288,603.55x = 432,912.71 × 136,765.00
  4. Step 4: Simplify right side
    288,603.55x = 59,207,306,042.78
  5. Step 5: Solve for x
    x = 59,207,306,042.78/288,603.55
  6. Step 6: Final answer
    x = 205,151.00

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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.