Home / 312,345.06-431,036.46-169,105.20

Finding the Fourth Proportional to 312,345.06, 431,036.46 and 169,105.20

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Solution

The fourth proportional to 312,345.06, 431,036.46 and 169,105.20 is: 233,365.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,345.06 : 431,036.46 = 169,105.20 : x
  2. Step 2: Convert to fraction form
    312,345.06/431,036.46 = 169,105.20/x
  3. Step 3: Cross multiply
    312,345.06x = 431,036.46 × 169,105.20
  4. Step 4: Simplify right side
    312,345.06x = 72,890,506,775.59
  5. Step 5: Solve for x
    x = 72,890,506,775.59/312,345.06
  6. Step 6: Final answer
    x = 233,365.33

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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.