Home / 458,221.60-687,332.40-121,261.60

Finding the Fourth Proportional to 458,221.60, 687,332.40 and 121,261.60

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Solution

The fourth proportional to 458,221.60, 687,332.40 and 121,261.60 is: 181,892.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    458,221.60 : 687,332.40 = 121,261.60 : x
  2. Step 2: Convert to fraction form
    458,221.60/687,332.40 = 121,261.60/x
  3. Step 3: Cross multiply
    458,221.60x = 687,332.40 × 121,261.60
  4. Step 4: Simplify right side
    458,221.60x = 83,347,026,555.84
  5. Step 5: Solve for x
    x = 83,347,026,555.84/458,221.60
  6. Step 6: Final answer
    x = 181,892.40

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Similar ratio
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1.5x scale

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.