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Finding the Fourth Proportional to 387,955.85, 535,298.81 and 226,779.71

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Solution

The fourth proportional to 387,955.85, 535,298.81 and 226,779.71 is: 312,909.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,955.85 : 535,298.81 = 226,779.71 : x
  2. Step 2: Convert to fraction form
    387,955.85/535,298.81 = 226,779.71/x
  3. Step 3: Cross multiply
    387,955.85x = 535,298.81 × 226,779.71
  4. Step 4: Simplify right side
    387,955.85x = 121,394,905,084.75
  5. Step 5: Solve for x
    x = 121,394,905,084.75/387,955.85
  6. Step 6: Final answer
    x = 312,909.08

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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.