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Finding the Fourth Proportional to 163,921.60, 245,558.40 and 144,438.40

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Solution

The fourth proportional to 163,921.60, 245,558.40 and 144,438.40 is: 216,372.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,921.60 : 245,558.40 = 144,438.40 : x
  2. Step 2: Convert to fraction form
    163,921.60/245,558.40 = 144,438.40/x
  3. Step 3: Cross multiply
    163,921.60x = 245,558.40 × 144,438.40
  4. Step 4: Simplify right side
    163,921.60x = 35,468,062,402.56
  5. Step 5: Solve for x
    x = 35,468,062,402.56/163,921.60
  6. Step 6: Final answer
    x = 216,372.11

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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.