Home / 319,017.52-439,937.12-209,926.72

Finding the Fourth Proportional to 319,017.52, 439,937.12 and 209,926.72

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Solution

The fourth proportional to 319,017.52, 439,937.12 and 209,926.72 is: 289,496.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,017.52 : 439,937.12 = 209,926.72 : x
  2. Step 2: Convert to fraction form
    319,017.52/439,937.12 = 209,926.72/x
  3. Step 3: Cross multiply
    319,017.52x = 439,937.12 × 209,926.72
  4. Step 4: Simplify right side
    319,017.52x = 92,354,556,607.85
  5. Step 5: Solve for x
    x = 92,354,556,607.85/319,017.52
  6. Step 6: Final answer
    x = 289,496.82

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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.