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Finding the Fourth Proportional to 210,549.90, 290,553.90 and 115,057.08

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Solution

The fourth proportional to 210,549.90, 290,553.90 and 115,057.08 is: 158,776.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,549.90 : 290,553.90 = 115,057.08 : x
  2. Step 2: Convert to fraction form
    210,549.90/290,553.90 = 115,057.08/x
  3. Step 3: Cross multiply
    210,549.90x = 290,553.90 × 115,057.08
  4. Step 4: Simplify right side
    210,549.90x = 33,430,283,316.61
  5. Step 5: Solve for x
    x = 33,430,283,316.61/210,549.90
  6. Step 6: Final answer
    x = 158,776.06

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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.