Home / 279,440.47-385,630.23-152,115.76

Finding the Fourth Proportional to 279,440.47, 385,630.23 and 152,115.76

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Solution

The fourth proportional to 279,440.47, 385,630.23 and 152,115.76 is: 209,921.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,440.47 : 385,630.23 = 152,115.76 : x
  2. Step 2: Convert to fraction form
    279,440.47/385,630.23 = 152,115.76/x
  3. Step 3: Cross multiply
    279,440.47x = 385,630.23 × 152,115.76
  4. Step 4: Simplify right side
    279,440.47x = 58,660,435,515.42
  5. Step 5: Solve for x
    x = 58,660,435,515.42/279,440.47
  6. Step 6: Final answer
    x = 209,921.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.