Home / 385,253,999.40-577,880,999.10-221,995,324.20

Finding the Fourth Proportional to 385,253,999.40, 577,880,999.10 and 221,995,324.20

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Solution

The fourth proportional to 385,253,999.40, 577,880,999.10 and 221,995,324.20 is: 332,992,986.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,253,999.40 : 577,880,999.10 = 221,995,324.20 : x
  2. Step 2: Convert to fraction form
    385,253,999.40/577,880,999.10 = 221,995,324.20/x
  3. Step 3: Cross multiply
    385,253,999.40x = 577,880,999.10 × 221,995,324.20
  4. Step 4: Simplify right side
    385,253,999.40x = 128,286,879,744,224,400
  5. Step 5: Solve for x
    x = 128,286,879,744,224,400/385,253,999.40
  6. Step 6: Final answer
    x = 332,992,986.30

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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.