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Finding the Fourth Proportional to 473,475.80, 709,292.10 and 285,930.20

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Solution

The fourth proportional to 473,475.80, 709,292.10 and 285,930.20 is: 428,338.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    473,475.80 : 709,292.10 = 285,930.20 : x
  2. Step 2: Convert to fraction form
    473,475.80/709,292.10 = 285,930.20/x
  3. Step 3: Cross multiply
    473,475.80x = 709,292.10 × 285,930.20
  4. Step 4: Simplify right side
    473,475.80x = 202,808,032,011.42
  5. Step 5: Solve for x
    x = 202,808,032,011.42/473,475.80
  6. Step 6: Final answer
    x = 428,338.75

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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.