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Finding the Fourth Proportional to 355,458.47, 490,485.31 and 228,306.29

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Solution

The fourth proportional to 355,458.47, 490,485.31 and 228,306.29 is: 315,032.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,458.47 : 490,485.31 = 228,306.29 : x
  2. Step 2: Convert to fraction form
    355,458.47/490,485.31 = 228,306.29/x
  3. Step 3: Cross multiply
    355,458.47x = 490,485.31 × 228,306.29
  4. Step 4: Simplify right side
    355,458.47x = 111,980,878,402.41
  5. Step 5: Solve for x
    x = 111,980,878,402.41/355,458.47
  6. Step 6: Final answer
    x = 315,032.25

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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.