Home / 385,253,998.40-577,880,997.60-221,995,323.20

Finding the Fourth Proportional to 385,253,998.40, 577,880,997.60 and 221,995,323.20

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Solution

The fourth proportional to 385,253,998.40, 577,880,997.60 and 221,995,323.20 is: 332,992,984.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,253,998.40 : 577,880,997.60 = 221,995,323.20 : x
  2. Step 2: Convert to fraction form
    385,253,998.40/577,880,997.60 = 221,995,323.20/x
  3. Step 3: Cross multiply
    385,253,998.40x = 577,880,997.60 × 221,995,323.20
  4. Step 4: Simplify right side
    385,253,998.40x = 128,286,878,833,350,416
  5. Step 5: Solve for x
    x = 128,286,878,833,350,416/385,253,998.40
  6. Step 6: Final answer
    x = 332,992,984.80

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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.