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Finding the Fourth Proportional to 210,659.76, 290,676.87 and 120,017.52

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Solution

The fourth proportional to 210,659.76, 290,676.87 and 120,017.52 is: 165,605.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,659.76 : 290,676.87 = 120,017.52 : x
  2. Step 2: Convert to fraction form
    210,659.76/290,676.87 = 120,017.52/x
  3. Step 3: Cross multiply
    210,659.76x = 290,676.87 × 120,017.52
  4. Step 4: Simplify right side
    210,659.76x = 34,886,317,058.76
  5. Step 5: Solve for x
    x = 34,886,317,058.76/210,659.76
  6. Step 6: Final answer
    x = 165,605.04

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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.