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Finding the Fourth Proportional to 312,938.87, 469,601.04 and 123,366.98

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Solution

The fourth proportional to 312,938.87, 469,601.04 and 123,366.98 is: 185,126.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,938.87 : 469,601.04 = 123,366.98 : x
  2. Step 2: Convert to fraction form
    312,938.87/469,601.04 = 123,366.98/x
  3. Step 3: Cross multiply
    312,938.87x = 469,601.04 × 123,366.98
  4. Step 4: Simplify right side
    312,938.87x = 57,933,262,109.66
  5. Step 5: Solve for x
    x = 57,933,262,109.66/312,938.87
  6. Step 6: Final answer
    x = 185,126.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.