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Finding the Fourth Proportional to 325,614.90, 488,422.35 and 199,643.70

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Solution

The fourth proportional to 325,614.90, 488,422.35 and 199,643.70 is: 299,465.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,614.90 : 488,422.35 = 199,643.70 : x
  2. Step 2: Convert to fraction form
    325,614.90/488,422.35 = 199,643.70/x
  3. Step 3: Cross multiply
    325,614.90x = 488,422.35 × 199,643.70
  4. Step 4: Simplify right side
    325,614.90x = 97,510,445,116.70
  5. Step 5: Solve for x
    x = 97,510,445,116.70/325,614.90
  6. Step 6: Final answer
    x = 299,465.55

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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.