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Finding the Fourth Proportional to 279,886.62, 386,247.36 and 152,561.88

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Solution

The fourth proportional to 279,886.62, 386,247.36 and 152,561.88 is: 210,537.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,886.62 : 386,247.36 = 152,561.88 : x
  2. Step 2: Convert to fraction form
    279,886.62/386,247.36 = 152,561.88/x
  3. Step 3: Cross multiply
    279,886.62x = 386,247.36 × 152,561.88
  4. Step 4: Simplify right side
    279,886.62x = 58,926,623,386.64
  5. Step 5: Solve for x
    x = 58,926,623,386.64/279,886.62
  6. Step 6: Final answer
    x = 210,537.48

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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.