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Finding the Fourth Proportional to 368,611.86, 553,132.77 and 155,366.76

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Solution

The fourth proportional to 368,611.86, 553,132.77 and 155,366.76 is: 233,140.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,611.86 : 553,132.77 = 155,366.76 : x
  2. Step 2: Convert to fraction form
    368,611.86/553,132.77 = 155,366.76/x
  3. Step 3: Cross multiply
    368,611.86x = 553,132.77 × 155,366.76
  4. Step 4: Simplify right side
    368,611.86x = 85,938,446,015.88
  5. Step 5: Solve for x
    x = 85,938,446,015.88/368,611.86
  6. Step 6: Final answer
    x = 233,140.75

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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.