Home / 326,624.30-489,810.09-126,918.40

Finding the Fourth Proportional to 326,624.30, 489,810.09 and 126,918.40

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Solution

The fourth proportional to 326,624.30, 489,810.09 and 126,918.40 is: 190,328.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,624.30 : 489,810.09 = 126,918.40 : x
  2. Step 2: Convert to fraction form
    326,624.30/489,810.09 = 126,918.40/x
  3. Step 3: Cross multiply
    326,624.30x = 489,810.09 × 126,918.40
  4. Step 4: Simplify right side
    326,624.30x = 62,165,912,926.66
  5. Step 5: Solve for x
    x = 62,165,912,926.66/326,624.30
  6. Step 6: Final answer
    x = 190,328.50

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.