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Finding the Fourth Proportional to 254,649.60, 382,147.20 and 165,686.40

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Solution

The fourth proportional to 254,649.60, 382,147.20 and 165,686.40 is: 248,642.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    254,649.60 : 382,147.20 = 165,686.40 : x
  2. Step 2: Convert to fraction form
    254,649.60/382,147.20 = 165,686.40/x
  3. Step 3: Cross multiply
    254,649.60x = 382,147.20 × 165,686.40
  4. Step 4: Simplify right side
    254,649.60x = 63,316,593,838.08
  5. Step 5: Solve for x
    x = 63,316,593,838.08/254,649.60
  6. Step 6: Final answer
    x = 248,642.03

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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.