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Finding the Fourth Proportional to 472,437.04, 708,421.92 and 206,082.40

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Solution

The fourth proportional to 472,437.04, 708,421.92 and 206,082.40 is: 309,021.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    472,437.04 : 708,421.92 = 206,082.40 : x
  2. Step 2: Convert to fraction form
    472,437.04/708,421.92 = 206,082.40/x
  3. Step 3: Cross multiply
    472,437.04x = 708,421.92 × 206,082.40
  4. Step 4: Simplify right side
    472,437.04x = 145,993,289,486.21
  5. Step 5: Solve for x
    x = 145,993,289,486.21/472,437.04
  6. Step 6: Final answer
    x = 309,021.68

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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.