Home / 218,945.70-328,418.55-144,150.30

Finding the Fourth Proportional to 218,945.70, 328,418.55 and 144,150.30

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Solution

The fourth proportional to 218,945.70, 328,418.55 and 144,150.30 is: 216,225.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,945.70 : 328,418.55 = 144,150.30 : x
  2. Step 2: Convert to fraction form
    218,945.70/328,418.55 = 144,150.30/x
  3. Step 3: Cross multiply
    218,945.70x = 328,418.55 × 144,150.30
  4. Step 4: Simplify right side
    218,945.70x = 47,341,632,508.07
  5. Step 5: Solve for x
    x = 47,341,632,508.07/218,945.70
  6. Step 6: Final answer
    x = 216,225.45

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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.