Home / 287,321,729.24-396,503,982.65-155,162,722.52

Finding the Fourth Proportional to 287,321,729.24, 396,503,982.65 and 155,162,722.52

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Solution

The fourth proportional to 287,321,729.24, 396,503,982.65 and 155,162,722.52 is: 214,124,555.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,321,729.24 : 396,503,982.65 = 155,162,722.52 : x
  2. Step 2: Convert to fraction form
    287,321,729.24/396,503,982.65 = 155,162,722.52/x
  3. Step 3: Cross multiply
    287,321,729.24x = 396,503,982.65 × 155,162,722.52
  4. Step 4: Simplify right side
    287,321,729.24x = 61,522,637,436,271,672
  5. Step 5: Solve for x
    x = 61,522,637,436,271,672/287,321,729.24
  6. Step 6: Final answer
    x = 214,124,555.07

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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.