Home / 289,264.20-433,856.30-89,721.80

Finding the Fourth Proportional to 289,264.20, 433,856.30 and 89,721.80

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Solution

The fourth proportional to 289,264.20, 433,856.30 and 89,721.80 is: 134,570.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,264.20 : 433,856.30 = 89,721.80 : x
  2. Step 2: Convert to fraction form
    289,264.20/433,856.30 = 89,721.80/x
  3. Step 3: Cross multiply
    289,264.20x = 433,856.30 × 89,721.80
  4. Step 4: Simplify right side
    289,264.20x = 38,926,368,177.34
  5. Step 5: Solve for x
    x = 38,926,368,177.34/289,264.20
  6. Step 6: Final answer
    x = 134,570.29

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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.