Home / 279,936,682.90-419,905,024.35-256,128,126.10

Finding the Fourth Proportional to 279,936,682.90, 419,905,024.35 and 256,128,126.10

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Solution

The fourth proportional to 279,936,682.90, 419,905,024.35 and 256,128,126.10 is: 384,192,189.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,936,682.90 : 419,905,024.35 = 256,128,126.10 : x
  2. Step 2: Convert to fraction form
    279,936,682.90/419,905,024.35 = 256,128,126.10/x
  3. Step 3: Cross multiply
    279,936,682.90x = 419,905,024.35 × 256,128,126.10
  4. Step 4: Simplify right side
    279,936,682.90x = 107,549,487,026,740,368
  5. Step 5: Solve for x
    x = 107,549,487,026,740,368/279,936,682.90
  6. Step 6: Final answer
    x = 384,192,189.15

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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.