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Finding the Fourth Proportional to 279,803.52, 386,119.08 and 152,476.56

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Solution

The fourth proportional to 279,803.52, 386,119.08 and 152,476.56 is: 210,412.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,803.52 : 386,119.08 = 152,476.56 : x
  2. Step 2: Convert to fraction form
    279,803.52/386,119.08 = 152,476.56/x
  3. Step 3: Cross multiply
    279,803.52x = 386,119.08 × 152,476.56
  4. Step 4: Simplify right side
    279,803.52x = 58,874,109,068.76
  5. Step 5: Solve for x
    x = 58,874,109,068.76/279,803.52
  6. Step 6: Final answer
    x = 210,412.32

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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.