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Finding the Fourth Proportional to 279,460.80, 385,634.16 and 152,133.84

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Solution

The fourth proportional to 279,460.80, 385,634.16 and 152,133.84 is: 209,932.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,460.80 : 385,634.16 = 152,133.84 : x
  2. Step 2: Convert to fraction form
    279,460.80/385,634.16 = 152,133.84/x
  3. Step 3: Cross multiply
    279,460.80x = 385,634.16 × 152,133.84
  4. Step 4: Simplify right side
    279,460.80x = 58,668,005,595.97
  5. Step 5: Solve for x
    x = 58,668,005,595.97/279,460.80
  6. Step 6: Final answer
    x = 209,932.86

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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.