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Finding the Fourth Proportional to 210,893.16, 291,037.26 and 115,399.80

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Solution

The fourth proportional to 210,893.16, 291,037.26 and 115,399.80 is: 159,254.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,893.16 : 291,037.26 = 115,399.80 : x
  2. Step 2: Convert to fraction form
    210,893.16/291,037.26 = 115,399.80/x
  3. Step 3: Cross multiply
    210,893.16x = 291,037.26 × 115,399.80
  4. Step 4: Simplify right side
    210,893.16x = 33,585,641,596.55
  5. Step 5: Solve for x
    x = 33,585,641,596.55/210,893.16
  6. Step 6: Final answer
    x = 159,254.30

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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.