Home / 392,828.48-542,084.64-223,040

Finding the Fourth Proportional to 392,828.48, 542,084.64 and 223,040

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Solution

The fourth proportional to 392,828.48, 542,084.64 and 223,040 is: 307,784.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,828.48 : 542,084.64 = 223,040 : x
  2. Step 2: Convert to fraction form
    392,828.48/542,084.64 = 223,040/x
  3. Step 3: Cross multiply
    392,828.48x = 542,084.64 × 223,040
  4. Step 4: Simplify right side
    392,828.48x = 120,906,558,105.60
  5. Step 5: Solve for x
    x = 120,906,558,105.60/392,828.48
  6. Step 6: Final answer
    x = 307,784.60

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.