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Finding the Fourth Proportional to 271,465.32, 374,639.86 and 156,748.80

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Solution

The fourth proportional to 271,465.32, 374,639.86 and 156,748.80 is: 216,323.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    271,465.32 : 374,639.86 = 156,748.80 : x
  2. Step 2: Convert to fraction form
    271,465.32/374,639.86 = 156,748.80/x
  3. Step 3: Cross multiply
    271,465.32x = 374,639.86 × 156,748.80
  4. Step 4: Simplify right side
    271,465.32x = 58,724,346,486.12
  5. Step 5: Solve for x
    x = 58,724,346,486.12/271,465.32
  6. Step 6: Final answer
    x = 216,323.56

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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.