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Finding the Fourth Proportional to 279,666.59, 385,916.36 and 157,149.63

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Solution

The fourth proportional to 279,666.59, 385,916.36 and 157,149.63 is: 216,853.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,666.59 : 385,916.36 = 157,149.63 : x
  2. Step 2: Convert to fraction form
    279,666.59/385,916.36 = 157,149.63/x
  3. Step 3: Cross multiply
    279,666.59x = 385,916.36 × 157,149.63
  4. Step 4: Simplify right side
    279,666.59x = 60,646,612,399.20
  5. Step 5: Solve for x
    x = 60,646,612,399.20/279,666.59
  6. Step 6: Final answer
    x = 216,853.27

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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.