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Finding the Fourth Proportional to 265,331.40, 398,045.70 and 107,575.80

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Solution

The fourth proportional to 265,331.40, 398,045.70 and 107,575.80 is: 161,383.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,331.40 : 398,045.70 = 107,575.80 : x
  2. Step 2: Convert to fraction form
    265,331.40/398,045.70 = 107,575.80/x
  3. Step 3: Cross multiply
    265,331.40x = 398,045.70 × 107,575.80
  4. Step 4: Simplify right side
    265,331.40x = 42,820,084,614.06
  5. Step 5: Solve for x
    x = 42,820,084,614.06/265,331.40
  6. Step 6: Final answer
    x = 161,383.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.