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Finding the Fourth Proportional to 339,547.80, 509,552.10 and 220,930.20

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Solution

The fourth proportional to 339,547.80, 509,552.10 and 220,930.20 is: 331,545.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,547.80 : 509,552.10 = 220,930.20 : x
  2. Step 2: Convert to fraction form
    339,547.80/509,552.10 = 220,930.20/x
  3. Step 3: Cross multiply
    339,547.80x = 509,552.10 × 220,930.20
  4. Step 4: Simplify right side
    339,547.80x = 112,575,447,363.42
  5. Step 5: Solve for x
    x = 112,575,447,363.42/339,547.80
  6. Step 6: Final answer
    x = 331,545.21

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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.