Home / 280,722,818.70-387,371,491.74-155,272,314.96

Finding the Fourth Proportional to 280,722,818.70, 387,371,491.74 and 155,272,314.96

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Solution

The fourth proportional to 280,722,818.70, 387,371,491.74 and 155,272,314.96 is: 214,261,414.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,722,818.70 : 387,371,491.74 = 155,272,314.96 : x
  2. Step 2: Convert to fraction form
    280,722,818.70/387,371,491.74 = 155,272,314.96/x
  3. Step 3: Cross multiply
    280,722,818.70x = 387,371,491.74 × 155,272,314.96
  4. Step 4: Simplify right side
    280,722,818.70x = 60,148,068,271,978,320
  5. Step 5: Solve for x
    x = 60,148,068,271,978,320/280,722,818.70
  6. Step 6: Final answer
    x = 214,261,414.70

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.