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Finding the Fourth Proportional to 479,064.15, 661,079.99 and 275,148.27

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Solution

The fourth proportional to 479,064.15, 661,079.99 and 275,148.27 is: 379,688.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,064.15 : 661,079.99 = 275,148.27 : x
  2. Step 2: Convert to fraction form
    479,064.15/661,079.99 = 275,148.27/x
  3. Step 3: Cross multiply
    479,064.15x = 661,079.99 × 275,148.27
  4. Step 4: Simplify right side
    479,064.15x = 181,895,014,204.38
  5. Step 5: Solve for x
    x = 181,895,014,204.38/479,064.15
  6. Step 6: Final answer
    x = 379,688.22

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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.