Home / 256,078.20-384,117.30-172,097.40

Finding the Fourth Proportional to 256,078.20, 384,117.30 and 172,097.40

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Solution

The fourth proportional to 256,078.20, 384,117.30 and 172,097.40 is: 258,146.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,078.20 : 384,117.30 = 172,097.40 : x
  2. Step 2: Convert to fraction form
    256,078.20/384,117.30 = 172,097.40/x
  3. Step 3: Cross multiply
    256,078.20x = 384,117.30 × 172,097.40
  4. Step 4: Simplify right side
    256,078.20x = 66,105,588,625.02
  5. Step 5: Solve for x
    x = 66,105,588,625.02/256,078.20
  6. Step 6: Final answer
    x = 258,146.10

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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.