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Finding the Fourth Proportional to 236,854.40, 355,281.60 and 205,059.20

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Solution

The fourth proportional to 236,854.40, 355,281.60 and 205,059.20 is: 307,588.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    236,854.40 : 355,281.60 = 205,059.20 : x
  2. Step 2: Convert to fraction form
    236,854.40/355,281.60 = 205,059.20/x
  3. Step 3: Cross multiply
    236,854.40x = 355,281.60 × 205,059.20
  4. Step 4: Simplify right side
    236,854.40x = 72,853,760,670.72
  5. Step 5: Solve for x
    x = 72,853,760,670.72/236,854.40
  6. Step 6: Final answer
    x = 307,588.80

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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.