Home / 326,043.76-489,069.08-89,386.48

Finding the Fourth Proportional to 326,043.76, 489,069.08 and 89,386.48

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Solution

The fourth proportional to 326,043.76, 489,069.08 and 89,386.48 is: 134,080.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,043.76 : 489,069.08 = 89,386.48 : x
  2. Step 2: Convert to fraction form
    326,043.76/489,069.08 = 89,386.48/x
  3. Step 3: Cross multiply
    326,043.76x = 489,069.08 × 89,386.48
  4. Step 4: Simplify right side
    326,043.76x = 43,716,163,538.04
  5. Step 5: Solve for x
    x = 43,716,163,538.04/326,043.76
  6. Step 6: Final answer
    x = 134,080.66

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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.