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Finding the Fourth Proportional to 518,822.30, 778,342.80 and 163,872.20

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Solution

The fourth proportional to 518,822.30, 778,342.80 and 163,872.20 is: 245,842.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,822.30 : 778,342.80 = 163,872.20 : x
  2. Step 2: Convert to fraction form
    518,822.30/778,342.80 = 163,872.20/x
  3. Step 3: Cross multiply
    518,822.30x = 778,342.80 × 163,872.20
  4. Step 4: Simplify right side
    518,822.30x = 127,548,746,990.16
  5. Step 5: Solve for x
    x = 127,548,746,990.16/518,822.30
  6. Step 6: Final answer
    x = 245,842.84

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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.