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Finding the Fourth Proportional to 315,129.21, 472,693.58 and 93,513.21

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Solution

The fourth proportional to 315,129.21, 472,693.58 and 93,513.21 is: 140,269.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,129.21 : 472,693.58 = 93,513.21 : x
  2. Step 2: Convert to fraction form
    315,129.21/472,693.58 = 93,513.21/x
  3. Step 3: Cross multiply
    315,129.21x = 472,693.58 × 93,513.21
  4. Step 4: Simplify right side
    315,129.21x = 44,203,093,544.63
  5. Step 5: Solve for x
    x = 44,203,093,544.63/315,129.21
  6. Step 6: Final answer
    x = 140,269.74

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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.