Home / 382,205,872.80-573,308,809.20-209,615,997.60

Finding the Fourth Proportional to 382,205,872.80, 573,308,809.20 and 209,615,997.60

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Solution

The fourth proportional to 382,205,872.80, 573,308,809.20 and 209,615,997.60 is: 314,423,996.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    382,205,872.80 : 573,308,809.20 = 209,615,997.60 : x
  2. Step 2: Convert to fraction form
    382,205,872.80/573,308,809.20 = 209,615,997.60/x
  3. Step 3: Cross multiply
    382,205,872.80x = 573,308,809.20 × 209,615,997.60
  4. Step 4: Simplify right side
    382,205,872.80x = 120,174,697,973,326,064
  5. Step 5: Solve for x
    x = 120,174,697,973,326,064/382,205,872.80
  6. Step 6: Final answer
    x = 314,423,996.40

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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.