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Finding the Fourth Proportional to 518,676.30, 778,123.80 and 163,726.20

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Solution

The fourth proportional to 518,676.30, 778,123.80 and 163,726.20 is: 245,623.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,676.30 : 778,123.80 = 163,726.20 : x
  2. Step 2: Convert to fraction form
    518,676.30/778,123.80 = 163,726.20/x
  3. Step 3: Cross multiply
    518,676.30x = 778,123.80 × 163,726.20
  4. Step 4: Simplify right side
    518,676.30x = 127,399,252,903.56
  5. Step 5: Solve for x
    x = 127,399,252,903.56/518,676.30
  6. Step 6: Final answer
    x = 245,623.82

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1.5x scale

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.