Home / 211,398.04-291,729.20-115,902.70

Finding the Fourth Proportional to 211,398.04, 291,729.20 and 115,902.70

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Solution

The fourth proportional to 211,398.04, 291,729.20 and 115,902.70 is: 159,945.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,398.04 : 291,729.20 = 115,902.70 : x
  2. Step 2: Convert to fraction form
    211,398.04/291,729.20 = 115,902.70/x
  3. Step 3: Cross multiply
    211,398.04x = 291,729.20 × 115,902.70
  4. Step 4: Simplify right side
    211,398.04x = 33,812,201,948.84
  5. Step 5: Solve for x
    x = 33,812,201,948.84/211,398.04
  6. Step 6: Final answer
    x = 159,945.67

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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.