Home / 211,328.03-291,662.58-130,781.49

Finding the Fourth Proportional to 211,328.03, 291,662.58 and 130,781.49

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Solution

The fourth proportional to 211,328.03, 291,662.58 and 130,781.49 is: 180,496.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,328.03 : 291,662.58 = 130,781.49 : x
  2. Step 2: Convert to fraction form
    211,328.03/291,662.58 = 130,781.49/x
  3. Step 3: Cross multiply
    211,328.03x = 291,662.58 × 130,781.49
  4. Step 4: Simplify right side
    211,328.03x = 38,144,066,789.64
  5. Step 5: Solve for x
    x = 38,144,066,789.64/211,328.03
  6. Step 6: Final answer
    x = 180,496.96

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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.