Home / 386,209,531.80-579,314,297.70-143,822,280.60

Finding the Fourth Proportional to 386,209,531.80, 579,314,297.70 and 143,822,280.60

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Solution

The fourth proportional to 386,209,531.80, 579,314,297.70 and 143,822,280.60 is: 215,733,420.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,209,531.80 : 579,314,297.70 = 143,822,280.60 : x
  2. Step 2: Convert to fraction form
    386,209,531.80/579,314,297.70 = 143,822,280.60/x
  3. Step 3: Cross multiply
    386,209,531.80x = 579,314,297.70 × 143,822,280.60
  4. Step 4: Simplify right side
    386,209,531.80x = 83,318,303,479,401,344
  5. Step 5: Solve for x
    x = 83,318,303,479,401,344/386,209,531.80
  6. Step 6: Final answer
    x = 215,733,420.90

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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.