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Finding the Fourth Proportional to 518,337.93, 777,454.34 and 139,209.41

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Solution

The fourth proportional to 518,337.93, 777,454.34 and 139,209.41 is: 208,800.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,337.93 : 777,454.34 = 139,209.41 : x
  2. Step 2: Convert to fraction form
    518,337.93/777,454.34 = 139,209.41/x
  3. Step 3: Cross multiply
    518,337.93x = 777,454.34 × 139,209.41
  4. Step 4: Simplify right side
    518,337.93x = 108,228,959,973.34
  5. Step 5: Solve for x
    x = 108,228,959,973.34/518,337.93
  6. Step 6: Final answer
    x = 208,800.00

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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.