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Finding the Fourth Proportional to 210,563.65, 290,577.95 and 115,070.34

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Solution

The fourth proportional to 210,563.65, 290,577.95 and 115,070.34 is: 158,797.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,563.65 : 290,577.95 = 115,070.34 : x
  2. Step 2: Convert to fraction form
    210,563.65/290,577.95 = 115,070.34/x
  3. Step 3: Cross multiply
    210,563.65x = 290,577.95 × 115,070.34
  4. Step 4: Simplify right side
    210,563.65x = 33,436,902,814.33
  5. Step 5: Solve for x
    x = 33,436,902,814.33/210,563.65
  6. Step 6: Final answer
    x = 158,797.13

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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.