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Finding the Fourth Proportional to 210,692.28, 290,755.62 and 120,044.28

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Solution

The fourth proportional to 210,692.28, 290,755.62 and 120,044.28 is: 165,661.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,692.28 : 290,755.62 = 120,044.28 : x
  2. Step 2: Convert to fraction form
    210,692.28/290,755.62 = 120,044.28/x
  3. Step 3: Cross multiply
    210,692.28x = 290,755.62 × 120,044.28
  4. Step 4: Simplify right side
    210,692.28x = 34,903,549,058.85
  5. Step 5: Solve for x
    x = 34,903,549,058.85/210,692.28
  6. Step 6: Final answer
    x = 165,661.26

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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.