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Finding the Fourth Proportional to 286,441.28, 429,859.12 and 99,452.80

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Solution

The fourth proportional to 286,441.28, 429,859.12 and 99,452.80 is: 149,247.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,441.28 : 429,859.12 = 99,452.80 : x
  2. Step 2: Convert to fraction form
    286,441.28/429,859.12 = 99,452.80/x
  3. Step 3: Cross multiply
    286,441.28x = 429,859.12 × 99,452.80
  4. Step 4: Simplify right side
    286,441.28x = 42,750,693,089.54
  5. Step 5: Solve for x
    x = 42,750,693,089.54/286,441.28
  6. Step 6: Final answer
    x = 149,247.67

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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.