Home / 289,132.20-433,698.30-78,769.80

Finding the Fourth Proportional to 289,132.20, 433,698.30 and 78,769.80

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Solution

The fourth proportional to 289,132.20, 433,698.30 and 78,769.80 is: 118,154.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,132.20 : 433,698.30 = 78,769.80 : x
  2. Step 2: Convert to fraction form
    289,132.20/433,698.30 = 78,769.80/x
  3. Step 3: Cross multiply
    289,132.20x = 433,698.30 × 78,769.80
  4. Step 4: Simplify right side
    289,132.20x = 34,162,328,351.34
  5. Step 5: Solve for x
    x = 34,162,328,351.34/289,132.20
  6. Step 6: Final answer
    x = 118,154.70

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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.