Home / 291,345,938.70-437,018,908.05-199,512,933.90

Finding the Fourth Proportional to 291,345,938.70, 437,018,908.05 and 199,512,933.90

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Solution

The fourth proportional to 291,345,938.70, 437,018,908.05 and 199,512,933.90 is: 299,269,400.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,345,938.70 : 437,018,908.05 = 199,512,933.90 : x
  2. Step 2: Convert to fraction form
    291,345,938.70/437,018,908.05 = 199,512,933.90/x
  3. Step 3: Cross multiply
    291,345,938.70x = 437,018,908.05 × 199,512,933.90
  4. Step 4: Simplify right side
    291,345,938.70x = 87,190,924,514,829,840
  5. Step 5: Solve for x
    x = 87,190,924,514,829,840/291,345,938.70
  6. Step 6: Final answer
    x = 299,269,400.85

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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.