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Finding the Fourth Proportional to 307,872.79, 461,955.38 and 213,248.59

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Solution

The fourth proportional to 307,872.79, 461,955.38 and 213,248.59 is: 319,974.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,872.79 : 461,955.38 = 213,248.59 : x
  2. Step 2: Convert to fraction form
    307,872.79/461,955.38 = 213,248.59/x
  3. Step 3: Cross multiply
    307,872.79x = 461,955.38 × 213,248.59
  4. Step 4: Simplify right side
    307,872.79x = 98,511,333,427.91
  5. Step 5: Solve for x
    x = 98,511,333,427.91/307,872.79
  6. Step 6: Final answer
    x = 319,974.15

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1.5x scale

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.