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Finding the Fourth Proportional to 215,895.60, 323,551.80 and 144,615.60

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Solution

The fourth proportional to 215,895.60, 323,551.80 and 144,615.60 is: 216,728.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,895.60 : 323,551.80 = 144,615.60 : x
  2. Step 2: Convert to fraction form
    215,895.60/323,551.80 = 144,615.60/x
  3. Step 3: Cross multiply
    215,895.60x = 323,551.80 × 144,615.60
  4. Step 4: Simplify right side
    215,895.60x = 46,790,637,688.08
  5. Step 5: Solve for x
    x = 46,790,637,688.08/215,895.60
  6. Step 6: Final answer
    x = 216,728.07

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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.