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Finding the Fourth Proportional to 438,276.60, 657,480.60 and 185,556.60

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Solution

The fourth proportional to 438,276.60, 657,480.60 and 185,556.60 is: 278,362.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,276.60 : 657,480.60 = 185,556.60 : x
  2. Step 2: Convert to fraction form
    438,276.60/657,480.60 = 185,556.60/x
  3. Step 3: Cross multiply
    438,276.60x = 657,480.60 × 185,556.60
  4. Step 4: Simplify right side
    438,276.60x = 121,999,864,701.96
  5. Step 5: Solve for x
    x = 121,999,864,701.96/438,276.60
  6. Step 6: Final answer
    x = 278,362.72

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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.