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Finding the Fourth Proportional to 278,602.67, 384,476.22 and 151,278.57

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Solution

The fourth proportional to 278,602.67, 384,476.22 and 151,278.57 is: 208,766.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,602.67 : 384,476.22 = 151,278.57 : x
  2. Step 2: Convert to fraction form
    278,602.67/384,476.22 = 151,278.57/x
  3. Step 3: Cross multiply
    278,602.67x = 384,476.22 × 151,278.57
  4. Step 4: Simplify right side
    278,602.67x = 58,163,012,760.61
  5. Step 5: Solve for x
    x = 58,163,012,760.61/278,602.67
  6. Step 6: Final answer
    x = 208,766.89

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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.