Home / 217,897.12-326,543.28-99,278.56

Finding the Fourth Proportional to 217,897.12, 326,543.28 and 99,278.56

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Solution

The fourth proportional to 217,897.12, 326,543.28 and 99,278.56 is: 148,780.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,897.12 : 326,543.28 = 99,278.56 : x
  2. Step 2: Convert to fraction form
    217,897.12/326,543.28 = 99,278.56/x
  3. Step 3: Cross multiply
    217,897.12x = 326,543.28 × 99,278.56
  4. Step 4: Simplify right side
    217,897.12x = 32,418,746,616.08
  5. Step 5: Solve for x
    x = 32,418,746,616.08/217,897.12
  6. Step 6: Final answer
    x = 148,780.06

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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.