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Finding the Fourth Proportional to 518,487.21, 777,730.77 and 163,528.74

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Solution

The fourth proportional to 518,487.21, 777,730.77 and 163,528.74 is: 245,293.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,487.21 : 777,730.77 = 163,528.74 : x
  2. Step 2: Convert to fraction form
    518,487.21/777,730.77 = 163,528.74/x
  3. Step 3: Cross multiply
    518,487.21x = 777,730.77 × 163,528.74
  4. Step 4: Simplify right side
    518,487.21x = 127,181,332,877.33
  5. Step 5: Solve for x
    x = 127,181,332,877.33/518,487.21
  6. Step 6: Final answer
    x = 245,293.10

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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.