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Finding the Fourth Proportional to 315,398.31, 435,184.70 and 181,236.39

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Solution

The fourth proportional to 315,398.31, 435,184.70 and 181,236.39 is: 250,068.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,398.31 : 435,184.70 = 181,236.39 : x
  2. Step 2: Convert to fraction form
    315,398.31/435,184.70 = 181,236.39/x
  3. Step 3: Cross multiply
    315,398.31x = 435,184.70 × 181,236.39
  4. Step 4: Simplify right side
    315,398.31x = 78,871,303,105.05
  5. Step 5: Solve for x
    x = 78,871,303,105.05/315,398.31
  6. Step 6: Final answer
    x = 250,068.88

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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.