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Finding the Fourth Proportional to 303,639.69, 455,154.75 and 103,823.43

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Solution

The fourth proportional to 303,639.69, 455,154.75 and 103,823.43 is: 155,630.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,639.69 : 455,154.75 = 103,823.43 : x
  2. Step 2: Convert to fraction form
    303,639.69/455,154.75 = 103,823.43/x
  3. Step 3: Cross multiply
    303,639.69x = 455,154.75 × 103,823.43
  4. Step 4: Simplify right side
    303,639.69x = 47,255,727,325.79
  5. Step 5: Solve for x
    x = 47,255,727,325.79/303,639.69
  6. Step 6: Final answer
    x = 155,630.93

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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.