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Finding the Fourth Proportional to 279,437.88, 385,624.32 and 152,114.42

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Solution

The fourth proportional to 279,437.88, 385,624.32 and 152,114.42 is: 209,917.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,437.88 : 385,624.32 = 152,114.42 : x
  2. Step 2: Convert to fraction form
    279,437.88/385,624.32 = 152,114.42/x
  3. Step 3: Cross multiply
    279,437.88x = 385,624.32 × 152,114.42
  4. Step 4: Simplify right side
    279,437.88x = 58,659,019,774.69
  5. Step 5: Solve for x
    x = 58,659,019,774.69/279,437.88
  6. Step 6: Final answer
    x = 209,917.92

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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.