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Finding the Fourth Proportional to 252,184, 348,013.92 and 139,009.20

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Solution

The fourth proportional to 252,184, 348,013.92 and 139,009.20 is: 191,832.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,184 : 348,013.92 = 139,009.20 : x
  2. Step 2: Convert to fraction form
    252,184/348,013.92 = 139,009.20/x
  3. Step 3: Cross multiply
    252,184x = 348,013.92 × 139,009.20
  4. Step 4: Simplify right side
    252,184x = 48,377,136,608.06
  5. Step 5: Solve for x
    x = 48,377,136,608.06/252,184
  6. Step 6: Final answer
    x = 191,832.70

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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.