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Finding the Fourth Proportional to 537,980.80, 806,776.80 and 217,998.40

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Solution

The fourth proportional to 537,980.80, 806,776.80 and 217,998.40 is: 326,918.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    537,980.80 : 806,776.80 = 217,998.40 : x
  2. Step 2: Convert to fraction form
    537,980.80/806,776.80 = 217,998.40/x
  3. Step 3: Cross multiply
    537,980.80x = 806,776.80 × 217,998.40
  4. Step 4: Simplify right side
    537,980.80x = 175,876,051,557.12
  5. Step 5: Solve for x
    x = 175,876,051,557.12/537,980.80
  6. Step 6: Final answer
    x = 326,918.83

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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.