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Finding the Fourth Proportional to 518,808.78, 778,237.02 and 158,953.86

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Solution

The fourth proportional to 518,808.78, 778,237.02 and 158,953.86 is: 238,438.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,808.78 : 778,237.02 = 158,953.86 : x
  2. Step 2: Convert to fraction form
    518,808.78/778,237.02 = 158,953.86/x
  3. Step 3: Cross multiply
    518,808.78x = 778,237.02 × 158,953.86
  4. Step 4: Simplify right side
    518,808.78x = 123,703,778,323.90
  5. Step 5: Solve for x
    x = 123,703,778,323.90/518,808.78
  6. Step 6: Final answer
    x = 238,438.10

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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.