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Finding the Fourth Proportional to 292,214.80, 438,840.60 and 225,816.40

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Solution

The fourth proportional to 292,214.80, 438,840.60 and 225,816.40 is: 339,125.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,214.80 : 438,840.60 = 225,816.40 : x
  2. Step 2: Convert to fraction form
    292,214.80/438,840.60 = 225,816.40/x
  3. Step 3: Cross multiply
    292,214.80x = 438,840.60 × 225,816.40
  4. Step 4: Simplify right side
    292,214.80x = 99,097,404,465.84
  5. Step 5: Solve for x
    x = 99,097,404,465.84/292,214.80
  6. Step 6: Final answer
    x = 339,125.21

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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.