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Finding the Fourth Proportional to 279,752.96, 386,063.40 and 152,428.40

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Solution

The fourth proportional to 279,752.96, 386,063.40 and 152,428.40 is: 210,353.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,752.96 : 386,063.40 = 152,428.40 : x
  2. Step 2: Convert to fraction form
    279,752.96/386,063.40 = 152,428.40/x
  3. Step 3: Cross multiply
    279,752.96x = 386,063.40 × 152,428.40
  4. Step 4: Simplify right side
    279,752.96x = 58,847,026,360.56
  5. Step 5: Solve for x
    x = 58,847,026,360.56/279,752.96
  6. Step 6: Final answer
    x = 210,353.54

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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.