Home / 211,359.76-291,678.78-115,864.36

Finding the Fourth Proportional to 211,359.76, 291,678.78 and 115,864.36

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Solution

The fourth proportional to 211,359.76, 291,678.78 and 115,864.36 is: 159,894.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,359.76 : 291,678.78 = 115,864.36 : x
  2. Step 2: Convert to fraction form
    211,359.76/291,678.78 = 115,864.36/x
  3. Step 3: Cross multiply
    211,359.76x = 291,678.78 × 115,864.36
  4. Step 4: Simplify right side
    211,359.76x = 33,795,175,170.28
  5. Step 5: Solve for x
    x = 33,795,175,170.28/211,359.76
  6. Step 6: Final answer
    x = 159,894.08

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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.