Home / 211,009.23-291,196.34-130,434.68

Finding the Fourth Proportional to 211,009.23, 291,196.34 and 130,434.68

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Solution

The fourth proportional to 211,009.23, 291,196.34 and 130,434.68 is: 180,002.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,009.23 : 291,196.34 = 130,434.68 : x
  2. Step 2: Convert to fraction form
    211,009.23/291,196.34 = 130,434.68/x
  3. Step 3: Cross multiply
    211,009.23x = 291,196.34 × 130,434.68
  4. Step 4: Simplify right side
    211,009.23x = 37,982,101,425.07
  5. Step 5: Solve for x
    x = 37,982,101,425.07/211,009.23
  6. Step 6: Final answer
    x = 180,002.09

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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.