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Finding the Fourth Proportional to 465,178.73, 642,016.05 and 283,995.70

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Solution

The fourth proportional to 465,178.73, 642,016.05 and 283,995.70 is: 391,956.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    465,178.73 : 642,016.05 = 283,995.70 : x
  2. Step 2: Convert to fraction form
    465,178.73/642,016.05 = 283,995.70/x
  3. Step 3: Cross multiply
    465,178.73x = 642,016.05 × 283,995.70
  4. Step 4: Simplify right side
    465,178.73x = 182,329,795,925.95
  5. Step 5: Solve for x
    x = 182,329,795,925.95/465,178.73
  6. Step 6: Final answer
    x = 391,956.44

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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.