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Finding the Fourth Proportional to 240,138.66, 360,393.93 and 90,515.07

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Solution

The fourth proportional to 240,138.66, 360,393.93 and 90,515.07 is: 135,842.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    240,138.66 : 360,393.93 = 90,515.07 : x
  2. Step 2: Convert to fraction form
    240,138.66/360,393.93 = 90,515.07/x
  3. Step 3: Cross multiply
    240,138.66x = 360,393.93 × 90,515.07
  4. Step 4: Simplify right side
    240,138.66x = 32,621,081,801.53
  5. Step 5: Solve for x
    x = 32,621,081,801.53/240,138.66
  6. Step 6: Final answer
    x = 135,842.69

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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.