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Finding the Fourth Proportional to 553,251.41, 763,510.42 and 308,235.96

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Solution

The fourth proportional to 553,251.41, 763,510.42 and 308,235.96 is: 425,378.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,251.41 : 763,510.42 = 308,235.96 : x
  2. Step 2: Convert to fraction form
    553,251.41/763,510.42 = 308,235.96/x
  3. Step 3: Cross multiply
    553,251.41x = 763,510.42 × 308,235.96
  4. Step 4: Simplify right side
    553,251.41x = 235,341,367,278.70
  5. Step 5: Solve for x
    x = 235,341,367,278.70/553,251.41
  6. Step 6: Final answer
    x = 425,378.70

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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.