Home / 212,568,530.40-318,852,795.60-161,172,280.80

Finding the Fourth Proportional to 212,568,530.40, 318,852,795.60 and 161,172,280.80

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Solution

The fourth proportional to 212,568,530.40, 318,852,795.60 and 161,172,280.80 is: 241,758,421.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,568,530.40 : 318,852,795.60 = 161,172,280.80 : x
  2. Step 2: Convert to fraction form
    212,568,530.40/318,852,795.60 = 161,172,280.80/x
  3. Step 3: Cross multiply
    212,568,530.40x = 318,852,795.60 × 161,172,280.80
  4. Step 4: Simplify right side
    212,568,530.40x = 51,390,232,306,308,216
  5. Step 5: Solve for x
    x = 51,390,232,306,308,216/212,568,530.40
  6. Step 6: Final answer
    x = 241,758,421.20

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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.