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Finding the Fourth Proportional to 221,728.80, 332,593.20 and 97,312.80

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Solution

The fourth proportional to 221,728.80, 332,593.20 and 97,312.80 is: 145,969.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,728.80 : 332,593.20 = 97,312.80 : x
  2. Step 2: Convert to fraction form
    221,728.80/332,593.20 = 97,312.80/x
  3. Step 3: Cross multiply
    221,728.80x = 332,593.20 × 97,312.80
  4. Step 4: Simplify right side
    221,728.80x = 32,365,575,552.96
  5. Step 5: Solve for x
    x = 32,365,575,552.96/221,728.80
  6. Step 6: Final answer
    x = 145,969.20

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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.