Home / 278,679,271.20-418,018,906.80-186,846,266.40

Finding the Fourth Proportional to 278,679,271.20, 418,018,906.80 and 186,846,266.40

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Solution

The fourth proportional to 278,679,271.20, 418,018,906.80 and 186,846,266.40 is: 280,269,399.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,679,271.20 : 418,018,906.80 = 186,846,266.40 : x
  2. Step 2: Convert to fraction form
    278,679,271.20/418,018,906.80 = 186,846,266.40/x
  3. Step 3: Cross multiply
    278,679,271.20x = 418,018,906.80 × 186,846,266.40
  4. Step 4: Simplify right side
    278,679,271.20x = 78,105,272,020,189,584
  5. Step 5: Solve for x
    x = 78,105,272,020,189,584/278,679,271.20
  6. Step 6: Final answer
    x = 280,269,399.60

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1.5x scale

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.