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Finding the Fourth Proportional to 278,701.43, 384,607.44 and 151,376.72

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Solution

The fourth proportional to 278,701.43, 384,607.44 and 151,376.72 is: 208,899.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,701.43 : 384,607.44 = 151,376.72 : x
  2. Step 2: Convert to fraction form
    278,701.43/384,607.44 = 151,376.72/x
  3. Step 3: Cross multiply
    278,701.43x = 384,607.44 × 151,376.72
  4. Step 4: Simplify right side
    278,701.43x = 58,220,610,831.76
  5. Step 5: Solve for x
    x = 58,220,610,831.76/278,701.43
  6. Step 6: Final answer
    x = 208,899.58

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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.