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Finding the Fourth Proportional to 240,287.40, 360,690.30 and 135,311.40

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Solution

The fourth proportional to 240,287.40, 360,690.30 and 135,311.40 is: 203,113.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    240,287.40 : 360,690.30 = 135,311.40 : x
  2. Step 2: Convert to fraction form
    240,287.40/360,690.30 = 135,311.40/x
  3. Step 3: Cross multiply
    240,287.40x = 360,690.30 × 135,311.40
  4. Step 4: Simplify right side
    240,287.40x = 48,805,509,459.42
  5. Step 5: Solve for x
    x = 48,805,509,459.42/240,287.40
  6. Step 6: Final answer
    x = 203,113.06

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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.