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Finding the Fourth Proportional to 210,640.98, 290,686.48 and 119,995.60

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Solution

The fourth proportional to 210,640.98, 290,686.48 and 119,995.60 is: 165,595.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,640.98 : 290,686.48 = 119,995.60 : x
  2. Step 2: Convert to fraction form
    210,640.98/290,686.48 = 119,995.60/x
  3. Step 3: Cross multiply
    210,640.98x = 290,686.48 × 119,995.60
  4. Step 4: Simplify right side
    210,640.98x = 34,881,098,579.49
  5. Step 5: Solve for x
    x = 34,881,098,579.49/210,640.98
  6. Step 6: Final answer
    x = 165,595.03

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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.