Home / 318,210.12-439,128.38-187,463.66

Finding the Fourth Proportional to 318,210.12, 439,128.38 and 187,463.66

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Solution

The fourth proportional to 318,210.12, 439,128.38 and 187,463.66 is: 258,698.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,210.12 : 439,128.38 = 187,463.66 : x
  2. Step 2: Convert to fraction form
    318,210.12/439,128.38 = 187,463.66/x
  3. Step 3: Cross multiply
    318,210.12x = 439,128.38 × 187,463.66
  4. Step 4: Simplify right side
    318,210.12x = 82,320,613,324.67
  5. Step 5: Solve for x
    x = 82,320,613,324.67/318,210.12
  6. Step 6: Final answer
    x = 258,698.92

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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.