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Finding the Fourth Proportional to 292,211.80, 438,836.10 and 225,813.40

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Solution

The fourth proportional to 292,211.80, 438,836.10 and 225,813.40 is: 339,120.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,211.80 : 438,836.10 = 225,813.40 : x
  2. Step 2: Convert to fraction form
    292,211.80/438,836.10 = 225,813.40/x
  3. Step 3: Cross multiply
    292,211.80x = 438,836.10 × 225,813.40
  4. Step 4: Simplify right side
    292,211.80x = 99,095,071,783.74
  5. Step 5: Solve for x
    x = 99,095,071,783.74/292,211.80
  6. Step 6: Final answer
    x = 339,120.71

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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.