Home / 321,012,748.11-480,701,693.85-211,505,925.23

Finding the Fourth Proportional to 321,012,748.11, 480,701,693.85 and 211,505,925.23

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Solution

The fourth proportional to 321,012,748.11, 480,701,693.85 and 211,505,925.23 is: 316,720,308.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,012,748.11 : 480,701,693.85 = 211,505,925.23 : x
  2. Step 2: Convert to fraction form
    321,012,748.11/480,701,693.85 = 211,505,925.23/x
  3. Step 3: Cross multiply
    321,012,748.11x = 480,701,693.85 × 211,505,925.23
  4. Step 4: Simplify right side
    321,012,748.11x = 101,671,256,514,968,944
  5. Step 5: Solve for x
    x = 101,671,256,514,968,944/321,012,748.11
  6. Step 6: Final answer
    x = 316,720,308.19

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.