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Finding the Fourth Proportional to 210,508.70, 290,501.51 and 115,016.11

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Solution

The fourth proportional to 210,508.70, 290,501.51 and 115,016.11 is: 158,721.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,508.70 : 290,501.51 = 115,016.11 : x
  2. Step 2: Convert to fraction form
    210,508.70/290,501.51 = 115,016.11/x
  3. Step 3: Cross multiply
    210,508.70x = 290,501.51 × 115,016.11
  4. Step 4: Simplify right side
    210,508.70x = 33,412,352,327.99
  5. Step 5: Solve for x
    x = 33,412,352,327.99/210,508.70
  6. Step 6: Final answer
    x = 158,721.96

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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.