Home / 387,947.34-535,287.07-226,771.21

Finding the Fourth Proportional to 387,947.34, 535,287.07 and 226,771.21

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Solution

The fourth proportional to 387,947.34, 535,287.07 and 226,771.21 is: 312,897.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,947.34 : 535,287.07 = 226,771.21 : x
  2. Step 2: Convert to fraction form
    387,947.34/535,287.07 = 226,771.21/x
  3. Step 3: Cross multiply
    387,947.34x = 535,287.07 × 226,771.21
  4. Step 4: Simplify right side
    387,947.34x = 121,387,692,750.96
  5. Step 5: Solve for x
    x = 121,387,692,750.96/387,947.34
  6. Step 6: Final answer
    x = 312,897.35

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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.