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Finding the Fourth Proportional to 215,881.60, 323,530.80 and 144,601.60

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Solution

The fourth proportional to 215,881.60, 323,530.80 and 144,601.60 is: 216,707.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,881.60 : 323,530.80 = 144,601.60 : x
  2. Step 2: Convert to fraction form
    215,881.60/323,530.80 = 144,601.60/x
  3. Step 3: Cross multiply
    215,881.60x = 323,530.80 × 144,601.60
  4. Step 4: Simplify right side
    215,881.60x = 46,783,071,329.28
  5. Step 5: Solve for x
    x = 46,783,071,329.28/215,881.60
  6. Step 6: Final answer
    x = 216,707.08

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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.