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Finding the Fourth Proportional to 218,833.40, 328,250.10 and 148,849.40

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Solution

The fourth proportional to 218,833.40, 328,250.10 and 148,849.40 is: 223,274.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,833.40 : 328,250.10 = 148,849.40 : x
  2. Step 2: Convert to fraction form
    218,833.40/328,250.10 = 148,849.40/x
  3. Step 3: Cross multiply
    218,833.40x = 328,250.10 × 148,849.40
  4. Step 4: Simplify right side
    218,833.40x = 48,859,830,434.94
  5. Step 5: Solve for x
    x = 48,859,830,434.94/218,833.40
  6. Step 6: Final answer
    x = 223,274.10

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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.