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Finding the Fourth Proportional to 310,373.91, 428,302.20 and 181,324.35

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Solution

The fourth proportional to 310,373.91, 428,302.20 and 181,324.35 is: 250,219.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,373.91 : 428,302.20 = 181,324.35 : x
  2. Step 2: Convert to fraction form
    310,373.91/428,302.20 = 181,324.35/x
  3. Step 3: Cross multiply
    310,373.91x = 428,302.20 × 181,324.35
  4. Step 4: Simplify right side
    310,373.91x = 77,661,618,018.57
  5. Step 5: Solve for x
    x = 77,661,618,018.57/310,373.91
  6. Step 6: Final answer
    x = 250,219.54

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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.