Home / 312,357.06-431,053.02-169,117.20

Finding the Fourth Proportional to 312,357.06, 431,053.02 and 169,117.20

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Solution

The fourth proportional to 312,357.06, 431,053.02 and 169,117.20 is: 233,381.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,357.06 : 431,053.02 = 169,117.20 : x
  2. Step 2: Convert to fraction form
    312,357.06/431,053.02 = 169,117.20/x
  3. Step 3: Cross multiply
    312,357.06x = 431,053.02 × 169,117.20
  4. Step 4: Simplify right side
    312,357.06x = 72,898,479,793.94
  5. Step 5: Solve for x
    x = 72,898,479,793.94/312,357.06
  6. Step 6: Final answer
    x = 233,381.89

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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.