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Finding the Fourth Proportional to 326,452.64, 489,681.12 and 89,820.32

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Solution

The fourth proportional to 326,452.64, 489,681.12 and 89,820.32 is: 134,731.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,452.64 : 489,681.12 = 89,820.32 : x
  2. Step 2: Convert to fraction form
    326,452.64/489,681.12 = 89,820.32/x
  3. Step 3: Cross multiply
    326,452.64x = 489,681.12 × 89,820.32
  4. Step 4: Simplify right side
    326,452.64x = 43,983,314,896.36
  5. Step 5: Solve for x
    x = 43,983,314,896.36/326,452.64
  6. Step 6: Final answer
    x = 134,731.07

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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.