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Finding the Fourth Proportional to 279,132.57, 385,204.76 and 151,809.08

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Solution

The fourth proportional to 279,132.57, 385,204.76 and 151,809.08 is: 209,497.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,132.57 : 385,204.76 = 151,809.08 : x
  2. Step 2: Convert to fraction form
    279,132.57/385,204.76 = 151,809.08/x
  3. Step 3: Cross multiply
    279,132.57x = 385,204.76 × 151,809.08
  4. Step 4: Simplify right side
    279,132.57x = 58,477,577,542.15
  5. Step 5: Solve for x
    x = 58,477,577,542.15/279,132.57
  6. Step 6: Final answer
    x = 209,497.51

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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.