Home / 379,788.08-524,031.73-209,989.40

Finding the Fourth Proportional to 379,788.08, 524,031.73 and 209,989.40

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Solution

The fourth proportional to 379,788.08, 524,031.73 and 209,989.40 is: 289,743.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,788.08 : 524,031.73 = 209,989.40 : x
  2. Step 2: Convert to fraction form
    379,788.08/524,031.73 = 209,989.40/x
  3. Step 3: Cross multiply
    379,788.08x = 524,031.73 × 209,989.40
  4. Step 4: Simplify right side
    379,788.08x = 110,041,105,418.53
  5. Step 5: Solve for x
    x = 110,041,105,418.53/379,788.08
  6. Step 6: Final answer
    x = 289,743.45

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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.