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Finding the Fourth Proportional to 203,291.68, 280,810.02 and 156,127.78

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Solution

The fourth proportional to 203,291.68, 280,810.02 and 156,127.78 is: 215,661.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,291.68 : 280,810.02 = 156,127.78 : x
  2. Step 2: Convert to fraction form
    203,291.68/280,810.02 = 156,127.78/x
  3. Step 3: Cross multiply
    203,291.68x = 280,810.02 × 156,127.78
  4. Step 4: Simplify right side
    203,291.68x = 43,842,245,024.36
  5. Step 5: Solve for x
    x = 43,842,245,024.36/203,291.68
  6. Step 6: Final answer
    x = 215,661.78

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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.