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Finding the Fourth Proportional to 278,424.42, 384,225.90 and 151,099.98

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Solution

The fourth proportional to 278,424.42, 384,225.90 and 151,099.98 is: 208,518.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,424.42 : 384,225.90 = 151,099.98 : x
  2. Step 2: Convert to fraction form
    278,424.42/384,225.90 = 151,099.98/x
  3. Step 3: Cross multiply
    278,424.42x = 384,225.90 × 151,099.98
  4. Step 4: Simplify right side
    278,424.42x = 58,056,525,805.48
  5. Step 5: Solve for x
    x = 58,056,525,805.48/278,424.42
  6. Step 6: Final answer
    x = 208,518.08

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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.