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Finding the Fourth Proportional to 519,962.88, 780,060.88 and 164,988.48

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Solution

The fourth proportional to 519,962.88, 780,060.88 and 164,988.48 is: 247,519.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,962.88 : 780,060.88 = 164,988.48 : x
  2. Step 2: Convert to fraction form
    519,962.88/780,060.88 = 164,988.48/x
  3. Step 3: Cross multiply
    519,962.88x = 780,060.88 × 164,988.48
  4. Step 4: Simplify right side
    519,962.88x = 128,701,058,898.66
  5. Step 5: Solve for x
    x = 128,701,058,898.66/519,962.88
  6. Step 6: Final answer
    x = 247,519.71

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.