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Finding the Fourth Proportional to 279,608.64, 385,864.28 and 152,284.12

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Solution

The fourth proportional to 279,608.64, 385,864.28 and 152,284.12 is: 210,154.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,608.64 : 385,864.28 = 152,284.12 : x
  2. Step 2: Convert to fraction form
    279,608.64/385,864.28 = 152,284.12/x
  3. Step 3: Cross multiply
    279,608.64x = 385,864.28 × 152,284.12
  4. Step 4: Simplify right side
    279,608.64x = 58,761,002,319.23
  5. Step 5: Solve for x
    x = 58,761,002,319.23/279,608.64
  6. Step 6: Final answer
    x = 210,154.46

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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.