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Finding the Fourth Proportional to 235,270.70, 324,637 and 139,774.94

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Solution

The fourth proportional to 235,270.70, 324,637 and 139,774.94 is: 192,867.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,270.70 : 324,637 = 139,774.94 : x
  2. Step 2: Convert to fraction form
    235,270.70/324,637 = 139,774.94/x
  3. Step 3: Cross multiply
    235,270.70x = 324,637 × 139,774.94
  4. Step 4: Simplify right side
    235,270.70x = 45,376,117,196.78
  5. Step 5: Solve for x
    x = 45,376,117,196.78/235,270.70
  6. Step 6: Final answer
    x = 192,867.69

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1.5x scale

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.