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Finding the Fourth Proportional to 279,885, 386,235.56 and 152,559.48

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Solution

The fourth proportional to 279,885, 386,235.56 and 152,559.48 is: 210,528.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,885 : 386,235.56 = 152,559.48 : x
  2. Step 2: Convert to fraction form
    279,885/386,235.56 = 152,559.48/x
  3. Step 3: Cross multiply
    279,885x = 386,235.56 × 152,559.48
  4. Step 4: Simplify right side
    279,885x = 58,923,896,191.11
  5. Step 5: Solve for x
    x = 58,923,896,191.11/279,885
  6. Step 6: Final answer
    x = 210,528.95

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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.