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Finding the Fourth Proportional to 240,626.10, 360,814.56 and 128,276.15

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Solution

The fourth proportional to 240,626.10, 360,814.56 and 128,276.15 is: 192,347.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    240,626.10 : 360,814.56 = 128,276.15 : x
  2. Step 2: Convert to fraction form
    240,626.10/360,814.56 = 128,276.15/x
  3. Step 3: Cross multiply
    240,626.10x = 360,814.56 × 128,276.15
  4. Step 4: Simplify right side
    240,626.10x = 46,283,900,816.67
  5. Step 5: Solve for x
    x = 46,283,900,816.67/240,626.10
  6. Step 6: Final answer
    x = 192,347.80

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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.