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Finding the Fourth Proportional to 211,236, 291,460.32 and 125,222.12

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Solution

The fourth proportional to 211,236, 291,460.32 and 125,222.12 is: 172,779.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,236 : 291,460.32 = 125,222.12 : x
  2. Step 2: Convert to fraction form
    211,236/291,460.32 = 125,222.12/x
  3. Step 3: Cross multiply
    211,236x = 291,460.32 × 125,222.12
  4. Step 4: Simplify right side
    211,236x = 36,497,279,166.28
  5. Step 5: Solve for x
    x = 36,497,279,166.28/211,236
  6. Step 6: Final answer
    x = 172,779.64

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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.