Home / 220,720.32-304,423.20-148,986.72

Finding the Fourth Proportional to 220,720.32, 304,423.20 and 148,986.72

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Solution

The fourth proportional to 220,720.32, 304,423.20 and 148,986.72 is: 205,486.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,720.32 : 304,423.20 = 148,986.72 : x
  2. Step 2: Convert to fraction form
    220,720.32/304,423.20 = 148,986.72/x
  3. Step 3: Cross multiply
    220,720.32x = 304,423.20 × 148,986.72
  4. Step 4: Simplify right side
    220,720.32x = 45,355,014,059.90
  5. Step 5: Solve for x
    x = 45,355,014,059.90/220,720.32
  6. Step 6: Final answer
    x = 205,486.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.