Home / 319,870.50-441,421.55-205,148.79

Finding the Fourth Proportional to 319,870.50, 441,421.55 and 205,148.79

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Solution

The fourth proportional to 319,870.50, 441,421.55 and 205,148.79 is: 283,105.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,870.50 : 441,421.55 = 205,148.79 : x
  2. Step 2: Convert to fraction form
    319,870.50/441,421.55 = 205,148.79/x
  3. Step 3: Cross multiply
    319,870.50x = 441,421.55 × 205,148.79
  4. Step 4: Simplify right side
    319,870.50x = 90,557,096,862.42
  5. Step 5: Solve for x
    x = 90,557,096,862.42/319,870.50
  6. Step 6: Final answer
    x = 283,105.50

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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.