Home / 211,511.05-291,720.29-130,983.28

Finding the Fourth Proportional to 211,511.05, 291,720.29 and 130,983.28

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Solution

The fourth proportional to 211,511.05, 291,720.29 and 130,983.28 is: 180,654.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,511.05 : 291,720.29 = 130,983.28 : x
  2. Step 2: Convert to fraction form
    211,511.05/291,720.29 = 130,983.28/x
  3. Step 3: Cross multiply
    211,511.05x = 291,720.29 × 130,983.28
  4. Step 4: Simplify right side
    211,511.05x = 38,210,479,042.53
  5. Step 5: Solve for x
    x = 38,210,479,042.53/211,511.05
  6. Step 6: Final answer
    x = 180,654.77

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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.