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Finding the Fourth Proportional to 368,128.48, 506,763.60 and 272,454.88

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Solution

The fourth proportional to 368,128.48, 506,763.60 and 272,454.88 is: 375,059.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,128.48 : 506,763.60 = 272,454.88 : x
  2. Step 2: Convert to fraction form
    368,128.48/506,763.60 = 272,454.88/x
  3. Step 3: Cross multiply
    368,128.48x = 506,763.60 × 272,454.88
  4. Step 4: Simplify right side
    368,128.48x = 138,070,215,826.37
  5. Step 5: Solve for x
    x = 138,070,215,826.37/368,128.48
  6. Step 6: Final answer
    x = 375,059.86

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.