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Finding the Fourth Proportional to 345,502.56, 518,327.65 and 120,870.32

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Solution

The fourth proportional to 345,502.56, 518,327.65 and 120,870.32 is: 181,331.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,502.56 : 518,327.65 = 120,870.32 : x
  2. Step 2: Convert to fraction form
    345,502.56/518,327.65 = 120,870.32/x
  3. Step 3: Cross multiply
    345,502.56x = 518,327.65 × 120,870.32
  4. Step 4: Simplify right side
    345,502.56x = 62,650,428,942.13
  5. Step 5: Solve for x
    x = 62,650,428,942.13/345,502.56
  6. Step 6: Final answer
    x = 181,331.30

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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.