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Finding the Fourth Proportional to 235,746.60, 325,439.94 and 138,919.98

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Solution

The fourth proportional to 235,746.60, 325,439.94 and 138,919.98 is: 191,774.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,746.60 : 325,439.94 = 138,919.98 : x
  2. Step 2: Convert to fraction form
    235,746.60/325,439.94 = 138,919.98/x
  3. Step 3: Cross multiply
    235,746.60x = 325,439.94 × 138,919.98
  4. Step 4: Simplify right side
    235,746.60x = 45,210,109,956.00
  5. Step 5: Solve for x
    x = 45,210,109,956.00/235,746.60
  6. Step 6: Final answer
    x = 191,774.18

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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.