Home / 458,215.60-687,323.40-121,255.60

Finding the Fourth Proportional to 458,215.60, 687,323.40 and 121,255.60

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Solution

The fourth proportional to 458,215.60, 687,323.40 and 121,255.60 is: 181,883.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    458,215.60 : 687,323.40 = 121,255.60 : x
  2. Step 2: Convert to fraction form
    458,215.60/687,323.40 = 121,255.60/x
  3. Step 3: Cross multiply
    458,215.60x = 687,323.40 × 121,255.60
  4. Step 4: Simplify right side
    458,215.60x = 83,341,811,261.04
  5. Step 5: Solve for x
    x = 83,341,811,261.04/458,215.60
  6. Step 6: Final answer
    x = 181,883.40

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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.