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Finding the Fourth Proportional to 255,060.10, 382,573.95 and 86,580.10

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Solution

The fourth proportional to 255,060.10, 382,573.95 and 86,580.10 is: 129,864.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,060.10 : 382,573.95 = 86,580.10 : x
  2. Step 2: Convert to fraction form
    255,060.10/382,573.95 = 86,580.10/x
  3. Step 3: Cross multiply
    255,060.10x = 382,573.95 × 86,580.10
  4. Step 4: Simplify right side
    255,060.10x = 33,123,290,848.40
  5. Step 5: Solve for x
    x = 33,123,290,848.40/255,060.10
  6. Step 6: Final answer
    x = 129,864.65

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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.