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Finding the Fourth Proportional to 518,429.36, 777,726.06 and 181,461.87

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Solution

The fourth proportional to 518,429.36, 777,726.06 and 181,461.87 is: 272,221.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,429.36 : 777,726.06 = 181,461.87 : x
  2. Step 2: Convert to fraction form
    518,429.36/777,726.06 = 181,461.87/x
  3. Step 3: Cross multiply
    518,429.36x = 777,726.06 × 181,461.87
  4. Step 4: Simplify right side
    518,429.36x = 141,127,624,514.85
  5. Step 5: Solve for x
    x = 141,127,624,514.85/518,429.36
  6. Step 6: Final answer
    x = 272,221.51

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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.