Home / 289,258.20-433,847.30-89,715.80

Finding the Fourth Proportional to 289,258.20, 433,847.30 and 89,715.80

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Solution

The fourth proportional to 289,258.20, 433,847.30 and 89,715.80 is: 134,561.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,258.20 : 433,847.30 = 89,715.80 : x
  2. Step 2: Convert to fraction form
    289,258.20/433,847.30 = 89,715.80/x
  3. Step 3: Cross multiply
    289,258.20x = 433,847.30 × 89,715.80
  4. Step 4: Simplify right side
    289,258.20x = 38,922,957,597.34
  5. Step 5: Solve for x
    x = 38,922,957,597.34/289,258.20
  6. Step 6: Final answer
    x = 134,561.29

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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.