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Finding the Fourth Proportional to 368,624.07, 553,069.22 and 128,773.40

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Solution

The fourth proportional to 368,624.07, 553,069.22 and 128,773.40 is: 193,206.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,624.07 : 553,069.22 = 128,773.40 : x
  2. Step 2: Convert to fraction form
    368,624.07/553,069.22 = 128,773.40/x
  3. Step 3: Cross multiply
    368,624.07x = 553,069.22 × 128,773.40
  4. Step 4: Simplify right side
    368,624.07x = 71,220,600,485.53
  5. Step 5: Solve for x
    x = 71,220,600,485.53/368,624.07
  6. Step 6: Final answer
    x = 193,206.59

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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.