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Finding the Fourth Proportional to 210,543.30, 290,549.16 and 115,050.60

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Solution

The fourth proportional to 210,543.30, 290,549.16 and 115,050.60 is: 158,769.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,543.30 : 290,549.16 = 115,050.60 : x
  2. Step 2: Convert to fraction form
    210,543.30/290,549.16 = 115,050.60/x
  3. Step 3: Cross multiply
    210,543.30x = 290,549.16 × 115,050.60
  4. Step 4: Simplify right side
    210,543.30x = 33,427,855,187.50
  5. Step 5: Solve for x
    x = 33,427,855,187.50/210,543.30
  6. Step 6: Final answer
    x = 158,769.50

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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.