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Finding the Fourth Proportional to 520,859.71, 781,364.45 and 161,058.66

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Solution

The fourth proportional to 520,859.71, 781,364.45 and 161,058.66 is: 241,611.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,859.71 : 781,364.45 = 161,058.66 : x
  2. Step 2: Convert to fraction form
    520,859.71/781,364.45 = 161,058.66/x
  3. Step 3: Cross multiply
    520,859.71x = 781,364.45 × 161,058.66
  4. Step 4: Simplify right side
    520,859.71x = 125,845,511,288.64
  5. Step 5: Solve for x
    x = 125,845,511,288.64/520,859.71
  6. Step 6: Final answer
    x = 241,611.15

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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.