Home / 218,666.40-328,129.20-144,000.60

Finding the Fourth Proportional to 218,666.40, 328,129.20 and 144,000.60

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Solution

The fourth proportional to 218,666.40, 328,129.20 and 144,000.60 is: 216,086.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,666.40 : 328,129.20 = 144,000.60 : x
  2. Step 2: Convert to fraction form
    218,666.40/328,129.20 = 144,000.60/x
  3. Step 3: Cross multiply
    218,666.40x = 328,129.20 × 144,000.60
  4. Step 4: Simplify right side
    218,666.40x = 47,250,801,677.52
  5. Step 5: Solve for x
    x = 47,250,801,677.52/218,666.40
  6. Step 6: Final answer
    x = 216,086.25

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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.