Home / 278,787.74-384,746.12-157,930.02

Finding the Fourth Proportional to 278,787.74, 384,746.12 and 157,930.02

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Solution

The fourth proportional to 278,787.74, 384,746.12 and 157,930.02 is: 217,954.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,787.74 : 384,746.12 = 157,930.02 : x
  2. Step 2: Convert to fraction form
    278,787.74/384,746.12 = 157,930.02/x
  3. Step 3: Cross multiply
    278,787.74x = 384,746.12 × 157,930.02
  4. Step 4: Simplify right side
    278,787.74x = 60,762,962,229.11
  5. Step 5: Solve for x
    x = 60,762,962,229.11/278,787.74
  6. Step 6: Final answer
    x = 217,954.21

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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.