Home / 278,677.28-384,574.50-157,818.53

Finding the Fourth Proportional to 278,677.28, 384,574.50 and 157,818.53

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Solution

The fourth proportional to 278,677.28, 384,574.50 and 157,818.53 is: 217,789.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,677.28 : 384,574.50 = 157,818.53 : x
  2. Step 2: Convert to fraction form
    278,677.28/384,574.50 = 157,818.53/x
  3. Step 3: Cross multiply
    278,677.28x = 384,574.50 × 157,818.53
  4. Step 4: Simplify right side
    278,677.28x = 60,692,980,342.61
  5. Step 5: Solve for x
    x = 60,692,980,342.61/278,677.28
  6. Step 6: Final answer
    x = 217,789.49

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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.