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Finding the Fourth Proportional to 279,634.60, 385,897.62 and 152,309.08

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Solution

The fourth proportional to 279,634.60, 385,897.62 and 152,309.08 is: 210,187.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,634.60 : 385,897.62 = 152,309.08 : x
  2. Step 2: Convert to fraction form
    279,634.60/385,897.62 = 152,309.08/x
  3. Step 3: Cross multiply
    279,634.60x = 385,897.62 × 152,309.08
  4. Step 4: Simplify right side
    279,634.60x = 58,775,711,476.39
  5. Step 5: Solve for x
    x = 58,775,711,476.39/279,634.60
  6. Step 6: Final answer
    x = 210,187.55

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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.