Home / 211,155.56-291,397.20-115,666.28

Finding the Fourth Proportional to 211,155.56, 291,397.20 and 115,666.28

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Solution

The fourth proportional to 211,155.56, 291,397.20 and 115,666.28 is: 159,620.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,155.56 : 291,397.20 = 115,666.28 : x
  2. Step 2: Convert to fraction form
    211,155.56/291,397.20 = 115,666.28/x
  3. Step 3: Cross multiply
    211,155.56x = 291,397.20 × 115,666.28
  4. Step 4: Simplify right side
    211,155.56x = 33,704,830,126.42
  5. Step 5: Solve for x
    x = 33,704,830,126.42/211,155.56
  6. Step 6: Final answer
    x = 159,620.85

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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.