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Finding the Fourth Proportional to 288,452.64, 432,679.27 and 75,220.40

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Solution

The fourth proportional to 288,452.64, 432,679.27 and 75,220.40 is: 112,830.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,452.64 : 432,679.27 = 75,220.40 : x
  2. Step 2: Convert to fraction form
    288,452.64/432,679.27 = 75,220.40/x
  3. Step 3: Cross multiply
    288,452.64x = 432,679.27 × 75,220.40
  4. Step 4: Simplify right side
    288,452.64x = 32,546,306,361.97
  5. Step 5: Solve for x
    x = 32,546,306,361.97/288,452.64
  6. Step 6: Final answer
    x = 112,830.67

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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.