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Finding the Fourth Proportional to 210,990.64, 291,167.87 and 115,506.22

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Solution

The fourth proportional to 210,990.64, 291,167.87 and 115,506.22 is: 159,399.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,990.64 : 291,167.87 = 115,506.22 : x
  2. Step 2: Convert to fraction form
    210,990.64/291,167.87 = 115,506.22/x
  3. Step 3: Cross multiply
    210,990.64x = 291,167.87 × 115,506.22
  4. Step 4: Simplify right side
    210,990.64x = 33,631,700,485.30
  5. Step 5: Solve for x
    x = 33,631,700,485.30/210,990.64
  6. Step 6: Final answer
    x = 159,399.02

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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.