Home / 397,839.47-549,031.91-216,558

Finding the Fourth Proportional to 397,839.47, 549,031.91 and 216,558

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Solution

The fourth proportional to 397,839.47, 549,031.91 and 216,558 is: 298,857.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,839.47 : 549,031.91 = 216,558 : x
  2. Step 2: Convert to fraction form
    397,839.47/549,031.91 = 216,558/x
  3. Step 3: Cross multiply
    397,839.47x = 549,031.91 × 216,558
  4. Step 4: Simplify right side
    397,839.47x = 118,897,251,282.99
  5. Step 5: Solve for x
    x = 118,897,251,282.99/397,839.47
  6. Step 6: Final answer
    x = 298,857.36

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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.