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Finding the Fourth Proportional to 518,013.75, 777,064.64 and 144,036.75

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Solution

The fourth proportional to 518,013.75, 777,064.64 and 144,036.75 is: 216,067.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,013.75 : 777,064.64 = 144,036.75 : x
  2. Step 2: Convert to fraction form
    518,013.75/777,064.64 = 144,036.75/x
  3. Step 3: Cross multiply
    518,013.75x = 777,064.64 × 144,036.75
  4. Step 4: Simplify right side
    518,013.75x = 111,925,864,565.34
  5. Step 5: Solve for x
    x = 111,925,864,565.34/518,013.75
  6. Step 6: Final answer
    x = 216,067.36

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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.