Home / 309,065.40-463,598.10-131,578.20

Finding the Fourth Proportional to 309,065.40, 463,598.10 and 131,578.20

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Solution

The fourth proportional to 309,065.40, 463,598.10 and 131,578.20 is: 197,367.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,065.40 : 463,598.10 = 131,578.20 : x
  2. Step 2: Convert to fraction form
    309,065.40/463,598.10 = 131,578.20/x
  3. Step 3: Cross multiply
    309,065.40x = 463,598.10 × 131,578.20
  4. Step 4: Simplify right side
    309,065.40x = 60,999,403,521.42
  5. Step 5: Solve for x
    x = 60,999,403,521.42/309,065.40
  6. Step 6: Final answer
    x = 197,367.30

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Similar ratio
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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.