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Finding the Fourth Proportional to 518,429.77, 777,570.84 and 163,397.66

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Solution

The fourth proportional to 518,429.77, 777,570.84 and 163,397.66 is: 245,073.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,429.77 : 777,570.84 = 163,397.66 : x
  2. Step 2: Convert to fraction form
    518,429.77/777,570.84 = 163,397.66/x
  3. Step 3: Cross multiply
    518,429.77x = 777,570.84 × 163,397.66
  4. Step 4: Simplify right side
    518,429.77x = 127,053,251,852.38
  5. Step 5: Solve for x
    x = 127,053,251,852.38/518,429.77
  6. Step 6: Final answer
    x = 245,073.22

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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.