Home / 256,004.20-384,006.30-172,023.40

Finding the Fourth Proportional to 256,004.20, 384,006.30 and 172,023.40

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Solution

The fourth proportional to 256,004.20, 384,006.30 and 172,023.40 is: 258,035.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,004.20 : 384,006.30 = 172,023.40 : x
  2. Step 2: Convert to fraction form
    256,004.20/384,006.30 = 172,023.40/x
  3. Step 3: Cross multiply
    256,004.20x = 384,006.30 × 172,023.40
  4. Step 4: Simplify right side
    256,004.20x = 66,058,069,347.42
  5. Step 5: Solve for x
    x = 66,058,069,347.42/256,004.20
  6. Step 6: Final answer
    x = 258,035.10

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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.