Home / 211,364.12-291,712.32-130,817.60

Finding the Fourth Proportional to 211,364.12, 291,712.32 and 130,817.60

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Solution

The fourth proportional to 211,364.12, 291,712.32 and 130,817.60 is: 180,546.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,364.12 : 291,712.32 = 130,817.60 : x
  2. Step 2: Convert to fraction form
    211,364.12/291,712.32 = 130,817.60/x
  3. Step 3: Cross multiply
    211,364.12x = 291,712.32 × 130,817.60
  4. Step 4: Simplify right side
    211,364.12x = 38,161,105,592.83
  5. Step 5: Solve for x
    x = 38,161,105,592.83/211,364.12
  6. Step 6: Final answer
    x = 180,546.75

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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.