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Finding the Fourth Proportional to 479,089.92, 661,160 and 261,310.40

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Solution

The fourth proportional to 479,089.92, 661,160 and 261,310.40 is: 360,617.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,089.92 : 661,160 = 261,310.40 : x
  2. Step 2: Convert to fraction form
    479,089.92/661,160 = 261,310.40/x
  3. Step 3: Cross multiply
    479,089.92x = 661,160 × 261,310.40
  4. Step 4: Simplify right side
    479,089.92x = 172,767,984,064
  5. Step 5: Solve for x
    x = 172,767,984,064/479,089.92
  6. Step 6: Final answer
    x = 360,617.03

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.