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Finding the Fourth Proportional to 328,266.32, 492,399.32 and 78,948.24

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Solution

The fourth proportional to 328,266.32, 492,399.32 and 78,948.24 is: 118,422.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,266.32 : 492,399.32 = 78,948.24 : x
  2. Step 2: Convert to fraction form
    328,266.32/492,399.32 = 78,948.24/x
  3. Step 3: Cross multiply
    328,266.32x = 492,399.32 × 78,948.24
  4. Step 4: Simplify right side
    328,266.32x = 38,874,059,691.20
  5. Step 5: Solve for x
    x = 38,874,059,691.20/328,266.32
  6. Step 6: Final answer
    x = 118,422.32

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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.