Home / 218,672.40-328,138.20-144,006.60

Finding the Fourth Proportional to 218,672.40, 328,138.20 and 144,006.60

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Solution

The fourth proportional to 218,672.40, 328,138.20 and 144,006.60 is: 216,095.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,672.40 : 328,138.20 = 144,006.60 : x
  2. Step 2: Convert to fraction form
    218,672.40/328,138.20 = 144,006.60/x
  3. Step 3: Cross multiply
    218,672.40x = 328,138.20 × 144,006.60
  4. Step 4: Simplify right side
    218,672.40x = 47,254,066,512.12
  5. Step 5: Solve for x
    x = 47,254,066,512.12/218,672.40
  6. Step 6: Final answer
    x = 216,095.25

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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.