Home / 318,456.83-439,666.79-219,172.50

Finding the Fourth Proportional to 318,456.83, 439,666.79 and 219,172.50

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Solution

The fourth proportional to 318,456.83, 439,666.79 and 219,172.50 is: 302,593.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,456.83 : 439,666.79 = 219,172.50 : x
  2. Step 2: Convert to fraction form
    318,456.83/439,666.79 = 219,172.50/x
  3. Step 3: Cross multiply
    318,456.83x = 439,666.79 × 219,172.50
  4. Step 4: Simplify right side
    318,456.83x = 96,362,868,435.41
  5. Step 5: Solve for x
    x = 96,362,868,435.41/318,456.83
  6. Step 6: Final answer
    x = 302,593.19

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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.