Home / 279,280.13-385,415.19-158,426.51

Finding the Fourth Proportional to 279,280.13, 385,415.19 and 158,426.51

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Solution

The fourth proportional to 279,280.13, 385,415.19 and 158,426.51 is: 218,633.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,280.13 : 385,415.19 = 158,426.51 : x
  2. Step 2: Convert to fraction form
    279,280.13/385,415.19 = 158,426.51/x
  3. Step 3: Cross multiply
    279,280.13x = 385,415.19 × 158,426.51
  4. Step 4: Simplify right side
    279,280.13x = 61,059,981,525.61
  5. Step 5: Solve for x
    x = 61,059,981,525.61/279,280.13
  6. Step 6: Final answer
    x = 218,633.47

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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.