Home / 349,974.40-524,961.60-279,990.40

Finding the Fourth Proportional to 349,974.40, 524,961.60 and 279,990.40

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Solution

The fourth proportional to 349,974.40, 524,961.60 and 279,990.40 is: 419,985.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    349,974.40 : 524,961.60 = 279,990.40 : x
  2. Step 2: Convert to fraction form
    349,974.40/524,961.60 = 279,990.40/x
  3. Step 3: Cross multiply
    349,974.40x = 524,961.60 × 279,990.40
  4. Step 4: Simplify right side
    349,974.40x = 146,984,208,368.64
  5. Step 5: Solve for x
    x = 146,984,208,368.64/349,974.40
  6. Step 6: Final answer
    x = 419,985.60

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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.