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Finding the Fourth Proportional to 210,969.38, 291,138.06 and 115,482.11

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Solution

The fourth proportional to 210,969.38, 291,138.06 and 115,482.11 is: 159,365.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,969.38 : 291,138.06 = 115,482.11 : x
  2. Step 2: Convert to fraction form
    210,969.38/291,138.06 = 115,482.11/x
  3. Step 3: Cross multiply
    210,969.38x = 291,138.06 × 115,482.11
  4. Step 4: Simplify right side
    210,969.38x = 33,621,237,470.11
  5. Step 5: Solve for x
    x = 33,621,237,470.11/210,969.38
  6. Step 6: Final answer
    x = 159,365.48

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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.