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Finding the Fourth Proportional to 252,720.38, 348,768.36 and 138,009.70

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Solution

The fourth proportional to 252,720.38, 348,768.36 and 138,009.70 is: 190,461.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,720.38 : 348,768.36 = 138,009.70 : x
  2. Step 2: Convert to fraction form
    252,720.38/348,768.36 = 138,009.70/x
  3. Step 3: Cross multiply
    252,720.38x = 348,768.36 × 138,009.70
  4. Step 4: Simplify right side
    252,720.38x = 48,133,416,733.09
  5. Step 5: Solve for x
    x = 48,133,416,733.09/252,720.38
  6. Step 6: Final answer
    x = 190,461.16

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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.