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Finding the Fourth Proportional to 230,613.60, 345,771.33 and 90,386.40

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Solution

The fourth proportional to 230,613.60, 345,771.33 and 90,386.40 is: 135,521.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,613.60 : 345,771.33 = 90,386.40 : x
  2. Step 2: Convert to fraction form
    230,613.60/345,771.33 = 90,386.40/x
  3. Step 3: Cross multiply
    230,613.60x = 345,771.33 × 90,386.40
  4. Step 4: Simplify right side
    230,613.60x = 31,253,025,741.91
  5. Step 5: Solve for x
    x = 31,253,025,741.91/230,613.60
  6. Step 6: Final answer
    x = 135,521.17

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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.