Home / 312,480.06-431,222.35-169,240.11

Finding the Fourth Proportional to 312,480.06, 431,222.35 and 169,240.11

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Solution

The fourth proportional to 312,480.06, 431,222.35 and 169,240.11 is: 233,551.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,480.06 : 431,222.35 = 169,240.11 : x
  2. Step 2: Convert to fraction form
    312,480.06/431,222.35 = 169,240.11/x
  3. Step 3: Cross multiply
    312,480.06x = 431,222.35 × 169,240.11
  4. Step 4: Simplify right side
    312,480.06x = 72,980,117,948.46
  5. Step 5: Solve for x
    x = 72,980,117,948.46/312,480.06
  6. Step 6: Final answer
    x = 233,551.28

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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.