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Finding the Fourth Proportional to 275,741.40, 413,612.10 and 220,445.40

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Solution

The fourth proportional to 275,741.40, 413,612.10 and 220,445.40 is: 330,668.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,741.40 : 413,612.10 = 220,445.40 : x
  2. Step 2: Convert to fraction form
    275,741.40/413,612.10 = 220,445.40/x
  3. Step 3: Cross multiply
    275,741.40x = 413,612.10 × 220,445.40
  4. Step 4: Simplify right side
    275,741.40x = 91,178,884,829.34
  5. Step 5: Solve for x
    x = 91,178,884,829.34/275,741.40
  6. Step 6: Final answer
    x = 330,668.10

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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.