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Finding the Fourth Proportional to 210,503.54, 290,491.48 and 115,008.19

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Solution

The fourth proportional to 210,503.54, 290,491.48 and 115,008.19 is: 158,709.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,503.54 : 290,491.48 = 115,008.19 : x
  2. Step 2: Convert to fraction form
    210,503.54/290,491.48 = 115,008.19/x
  3. Step 3: Cross multiply
    210,503.54x = 290,491.48 × 115,008.19
  4. Step 4: Simplify right side
    210,503.54x = 33,408,899,325.22
  5. Step 5: Solve for x
    x = 33,408,899,325.22/210,503.54
  6. Step 6: Final answer
    x = 158,709.44

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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.