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Finding the Fourth Proportional to 475,209.65, 655,790.15 and 260,345.09

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Solution

The fourth proportional to 475,209.65, 655,790.15 and 260,345.09 is: 359,276.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    475,209.65 : 655,790.15 = 260,345.09 : x
  2. Step 2: Convert to fraction form
    475,209.65/655,790.15 = 260,345.09/x
  3. Step 3: Cross multiply
    475,209.65x = 655,790.15 × 260,345.09
  4. Step 4: Simplify right side
    475,209.65x = 170,731,745,622.86
  5. Step 5: Solve for x
    x = 170,731,745,622.86/475,209.65
  6. Step 6: Final answer
    x = 359,276.68

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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.