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Finding the Fourth Proportional to 235,994.10, 325,671.28 and 128,565.01

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Solution

The fourth proportional to 235,994.10, 325,671.28 and 128,565.01 is: 177,419.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,994.10 : 325,671.28 = 128,565.01 : x
  2. Step 2: Convert to fraction form
    235,994.10/325,671.28 = 128,565.01/x
  3. Step 3: Cross multiply
    235,994.10x = 325,671.28 × 128,565.01
  4. Step 4: Simplify right side
    235,994.10x = 41,869,930,727.09
  5. Step 5: Solve for x
    x = 41,869,930,727.09/235,994.10
  6. Step 6: Final answer
    x = 177,419.40

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.