Home / 289,447.12-399,432.36-162,122.32

Finding the Fourth Proportional to 289,447.12, 399,432.36 and 162,122.32

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Solution

The fourth proportional to 289,447.12, 399,432.36 and 162,122.32 is: 223,726.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,447.12 : 399,432.36 = 162,122.32 : x
  2. Step 2: Convert to fraction form
    289,447.12/399,432.36 = 162,122.32/x
  3. Step 3: Cross multiply
    289,447.12x = 399,432.36 × 162,122.32
  4. Step 4: Simplify right side
    289,447.12x = 64,756,900,886.28
  5. Step 5: Solve for x
    x = 64,756,900,886.28/289,447.12
  6. Step 6: Final answer
    x = 223,726.19

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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.