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Finding the Fourth Proportional to 310,549.67, 428,529.00 and 181,518.39

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Solution

The fourth proportional to 310,549.67, 428,529.00 and 181,518.39 is: 250,478.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,549.67 : 428,529.00 = 181,518.39 : x
  2. Step 2: Convert to fraction form
    310,549.67/428,529.00 = 181,518.39/x
  3. Step 3: Cross multiply
    310,549.67x = 428,529.00 × 181,518.39
  4. Step 4: Simplify right side
    310,549.67x = 77,785,894,910.87
  5. Step 5: Solve for x
    x = 77,785,894,910.87/310,549.67
  6. Step 6: Final answer
    x = 250,478.11

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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.