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Finding the Fourth Proportional to 503,116.80, 753,868.80 and 266,150.40

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Solution

The fourth proportional to 503,116.80, 753,868.80 and 266,150.40 is: 398,799.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    503,116.80 : 753,868.80 = 266,150.40 : x
  2. Step 2: Convert to fraction form
    503,116.80/753,868.80 = 266,150.40/x
  3. Step 3: Cross multiply
    503,116.80x = 753,868.80 × 266,150.40
  4. Step 4: Simplify right side
    503,116.80x = 200,642,482,667.52
  5. Step 5: Solve for x
    x = 200,642,482,667.52/503,116.80
  6. Step 6: Final answer
    x = 398,799.01

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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.