Home / 278,316,279.10-417,474,418.65-262,443,907.90

Finding the Fourth Proportional to 278,316,279.10, 417,474,418.65 and 262,443,907.90

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Solution

The fourth proportional to 278,316,279.10, 417,474,418.65 and 262,443,907.90 is: 393,665,861.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,316,279.10 : 417,474,418.65 = 262,443,907.90 : x
  2. Step 2: Convert to fraction form
    278,316,279.10/417,474,418.65 = 262,443,907.90/x
  3. Step 3: Cross multiply
    278,316,279.10x = 417,474,418.65 × 262,443,907.90
  4. Step 4: Simplify right side
    278,316,279.10x = 109,563,617,878,786,640
  5. Step 5: Solve for x
    x = 109,563,617,878,786,640/278,316,279.10
  6. Step 6: Final answer
    x = 393,665,861.85

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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.