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Finding the Fourth Proportional to 279,472.75, 385,673.31 and 152,149.26

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Solution

The fourth proportional to 279,472.75, 385,673.31 and 152,149.26 is: 209,966.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,472.75 : 385,673.31 = 152,149.26 : x
  2. Step 2: Convert to fraction form
    279,472.75/385,673.31 = 152,149.26/x
  3. Step 3: Cross multiply
    279,472.75x = 385,673.31 × 152,149.26
  4. Step 4: Simplify right side
    279,472.75x = 58,679,908,718.25
  5. Step 5: Solve for x
    x = 58,679,908,718.25/279,472.75
  6. Step 6: Final answer
    x = 209,966.48

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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.