Home / 218,330.78-301,294.35-121,533.10

Finding the Fourth Proportional to 218,330.78, 301,294.35 and 121,533.10

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Solution

The fourth proportional to 218,330.78, 301,294.35 and 121,533.10 is: 167,714.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,330.78 : 301,294.35 = 121,533.10 : x
  2. Step 2: Convert to fraction form
    218,330.78/301,294.35 = 121,533.10/x
  3. Step 3: Cross multiply
    218,330.78x = 301,294.35 × 121,533.10
  4. Step 4: Simplify right side
    218,330.78x = 36,617,236,367.99
  5. Step 5: Solve for x
    x = 36,617,236,367.99/218,330.78
  6. Step 6: Final answer
    x = 167,714.49

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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.