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Finding the Fourth Proportional to 518,078.60, 777,117.90 and 144,101.60

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Solution

The fourth proportional to 518,078.60, 777,117.90 and 144,101.60 is: 216,152.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,078.60 : 777,117.90 = 144,101.60 : x
  2. Step 2: Convert to fraction form
    518,078.60/777,117.90 = 144,101.60/x
  3. Step 3: Cross multiply
    518,078.60x = 777,117.90 × 144,101.60
  4. Step 4: Simplify right side
    518,078.60x = 111,983,932,778.64
  5. Step 5: Solve for x
    x = 111,983,932,778.64/518,078.60
  6. Step 6: Final answer
    x = 216,152.40

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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.