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Finding the Fourth Proportional to 201,645.84, 278,258.13 and 115,603.77

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Solution

The fourth proportional to 201,645.84, 278,258.13 and 115,603.77 is: 159,525.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,645.84 : 278,258.13 = 115,603.77 : x
  2. Step 2: Convert to fraction form
    201,645.84/278,258.13 = 115,603.77/x
  3. Step 3: Cross multiply
    201,645.84x = 278,258.13 × 115,603.77
  4. Step 4: Simplify right side
    201,645.84x = 32,167,688,861.15
  5. Step 5: Solve for x
    x = 32,167,688,861.15/201,645.84
  6. Step 6: Final answer
    x = 159,525.68

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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.