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Finding the Fourth Proportional to 518,876.88, 778,304.52 and 144,890.16

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Solution

The fourth proportional to 518,876.88, 778,304.52 and 144,890.16 is: 217,332.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,876.88 : 778,304.52 = 144,890.16 : x
  2. Step 2: Convert to fraction form
    518,876.88/778,304.52 = 144,890.16/x
  3. Step 3: Cross multiply
    518,876.88x = 778,304.52 × 144,890.16
  4. Step 4: Simplify right side
    518,876.88x = 112,768,666,431.52
  5. Step 5: Solve for x
    x = 112,768,666,431.52/518,876.88
  6. Step 6: Final answer
    x = 217,332.22

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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.