Home / 278,631.20-384,516.23-157,772.12

Finding the Fourth Proportional to 278,631.20, 384,516.23 and 157,772.12

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Solution

The fourth proportional to 278,631.20, 384,516.23 and 157,772.12 is: 217,728.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,631.20 : 384,516.23 = 157,772.12 : x
  2. Step 2: Convert to fraction form
    278,631.20/384,516.23 = 157,772.12/x
  3. Step 3: Cross multiply
    278,631.20x = 384,516.23 × 157,772.12
  4. Step 4: Simplify right side
    278,631.20x = 60,665,938,070.07
  5. Step 5: Solve for x
    x = 60,665,938,070.07/278,631.20
  6. Step 6: Final answer
    x = 217,728.45

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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.