Home / 458,132.15-687,466.20-191,870.30

Finding the Fourth Proportional to 458,132.15, 687,466.20 and 191,870.30

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Solution

The fourth proportional to 458,132.15, 687,466.20 and 191,870.30 is: 287,917.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    458,132.15 : 687,466.20 = 191,870.30 : x
  2. Step 2: Convert to fraction form
    458,132.15/687,466.20 = 191,870.30/x
  3. Step 3: Cross multiply
    458,132.15x = 687,466.20 × 191,870.30
  4. Step 4: Simplify right side
    458,132.15x = 131,904,346,033.86
  5. Step 5: Solve for x
    x = 131,904,346,033.86/458,132.15
  6. Step 6: Final answer
    x = 287,917.68

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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.