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Finding the Fourth Proportional to 210,883.91, 291,019.82 and 115,390.62

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Solution

The fourth proportional to 210,883.91, 291,019.82 and 115,390.62 is: 159,239.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,883.91 : 291,019.82 = 115,390.62 : x
  2. Step 2: Convert to fraction form
    210,883.91/291,019.82 = 115,390.62/x
  3. Step 3: Cross multiply
    210,883.91x = 291,019.82 × 115,390.62
  4. Step 4: Simplify right side
    210,883.91x = 33,580,956,885.14
  5. Step 5: Solve for x
    x = 33,580,956,885.14/210,883.91
  6. Step 6: Final answer
    x = 159,239.07

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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.