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Finding the Fourth Proportional to 312,577.16, 431,355.96 and 169,340.84

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Solution

The fourth proportional to 312,577.16, 431,355.96 and 169,340.84 is: 233,690.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,577.16 : 431,355.96 = 169,340.84 : x
  2. Step 2: Convert to fraction form
    312,577.16/431,355.96 = 169,340.84/x
  3. Step 3: Cross multiply
    312,577.16x = 431,355.96 × 169,340.84
  4. Step 4: Simplify right side
    312,577.16x = 73,046,180,605.41
  5. Step 5: Solve for x
    x = 73,046,180,605.41/312,577.16
  6. Step 6: Final answer
    x = 233,690.08

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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.