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Finding the Fourth Proportional to 561,680.88, 842,521.32 and 187,703.88

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Solution

The fourth proportional to 561,680.88, 842,521.32 and 187,703.88 is: 281,555.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,680.88 : 842,521.32 = 187,703.88 : x
  2. Step 2: Convert to fraction form
    561,680.88/842,521.32 = 187,703.88/x
  3. Step 3: Cross multiply
    561,680.88x = 842,521.32 × 187,703.88
  4. Step 4: Simplify right side
    561,680.88x = 158,144,520,746.72
  5. Step 5: Solve for x
    x = 158,144,520,746.72/561,680.88
  6. Step 6: Final answer
    x = 281,555.82

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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.