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Finding the Fourth Proportional to 210,898.14, 291,044.14 and 115,404.80

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Solution

The fourth proportional to 210,898.14, 291,044.14 and 115,404.80 is: 159,261.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,898.14 : 291,044.14 = 115,404.80 : x
  2. Step 2: Convert to fraction form
    210,898.14/291,044.14 = 115,404.80/x
  3. Step 3: Cross multiply
    210,898.14x = 291,044.14 × 115,404.80
  4. Step 4: Simplify right side
    210,898.14x = 33,587,890,767.87
  5. Step 5: Solve for x
    x = 33,587,890,767.87/210,898.14
  6. Step 6: Final answer
    x = 159,261.20

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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.