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Finding the Fourth Proportional to 202,259.55, 279,000.32 and 129,636.57

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Solution

The fourth proportional to 202,259.55, 279,000.32 and 129,636.57 is: 178,822.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,259.55 : 279,000.32 = 129,636.57 : x
  2. Step 2: Convert to fraction form
    202,259.55/279,000.32 = 129,636.57/x
  3. Step 3: Cross multiply
    202,259.55x = 279,000.32 × 129,636.57
  4. Step 4: Simplify right side
    202,259.55x = 36,168,642,470.52
  5. Step 5: Solve for x
    x = 36,168,642,470.52/202,259.55
  6. Step 6: Final answer
    x = 178,822.92

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.