Home / 287,568,280.80-431,352,421.20-239,100,861.60

Finding the Fourth Proportional to 287,568,280.80, 431,352,421.20 and 239,100,861.60

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Solution

The fourth proportional to 287,568,280.80, 431,352,421.20 and 239,100,861.60 is: 358,651,292.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,568,280.80 : 431,352,421.20 = 239,100,861.60 : x
  2. Step 2: Convert to fraction form
    287,568,280.80/431,352,421.20 = 239,100,861.60/x
  3. Step 3: Cross multiply
    287,568,280.80x = 431,352,421.20 × 239,100,861.60
  4. Step 4: Simplify right side
    287,568,280.80x = 103,136,735,562,166,096
  5. Step 5: Solve for x
    x = 103,136,735,562,166,096/287,568,280.80
  6. Step 6: Final answer
    x = 358,651,292.40

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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.