Home / 289,877.21-434,819.15-87,475.06

Finding the Fourth Proportional to 289,877.21, 434,819.15 and 87,475.06

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Solution

The fourth proportional to 289,877.21, 434,819.15 and 87,475.06 is: 131,213.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,877.21 : 434,819.15 = 87,475.06 : x
  2. Step 2: Convert to fraction form
    289,877.21/434,819.15 = 87,475.06/x
  3. Step 3: Cross multiply
    289,877.21x = 434,819.15 × 87,475.06
  4. Step 4: Simplify right side
    289,877.21x = 38,035,832,976.91
  5. Step 5: Solve for x
    x = 38,035,832,976.91/289,877.21
  6. Step 6: Final answer
    x = 131,213.60

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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.