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Finding the Fourth Proportional to 218,666.70, 328,145.85 and 100,277.10

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Solution

The fourth proportional to 218,666.70, 328,145.85 and 100,277.10 is: 150,482.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,666.70 : 328,145.85 = 100,277.10 : x
  2. Step 2: Convert to fraction form
    218,666.70/328,145.85 = 100,277.10/x
  3. Step 3: Cross multiply
    218,666.70x = 328,145.85 × 100,277.10
  4. Step 4: Simplify right side
    218,666.70x = 32,905,514,215.04
  5. Step 5: Solve for x
    x = 32,905,514,215.04/218,666.70
  6. Step 6: Final answer
    x = 150,482.51

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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.