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Finding the Fourth Proportional to 271,987.80, 375,336.34 and 151,129.40

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Solution

The fourth proportional to 271,987.80, 375,336.34 and 151,129.40 is: 208,554.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    271,987.80 : 375,336.34 = 151,129.40 : x
  2. Step 2: Convert to fraction form
    271,987.80/375,336.34 = 151,129.40/x
  3. Step 3: Cross multiply
    271,987.80x = 375,336.34 × 151,129.40
  4. Step 4: Simplify right side
    271,987.80x = 56,724,354,457.99
  5. Step 5: Solve for x
    x = 56,724,354,457.99/271,987.80
  6. Step 6: Final answer
    x = 208,554.77

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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.