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Finding the Fourth Proportional to 518,981.40, 778,326.30 and 164,104.20

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Solution

The fourth proportional to 518,981.40, 778,326.30 and 164,104.20 is: 246,110.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,981.40 : 778,326.30 = 164,104.20 : x
  2. Step 2: Convert to fraction form
    518,981.40/778,326.30 = 164,104.20/x
  3. Step 3: Cross multiply
    518,981.40x = 778,326.30 × 164,104.20
  4. Step 4: Simplify right side
    518,981.40x = 127,726,614,800.46
  5. Step 5: Solve for x
    x = 127,726,614,800.46/518,981.40
  6. Step 6: Final answer
    x = 246,110.20

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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.