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Finding the Fourth Proportional to 315,045.40, 472,404.90 and 93,400.60

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Solution

The fourth proportional to 315,045.40, 472,404.90 and 93,400.60 is: 140,052.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,045.40 : 472,404.90 = 93,400.60 : x
  2. Step 2: Convert to fraction form
    315,045.40/472,404.90 = 93,400.60/x
  3. Step 3: Cross multiply
    315,045.40x = 472,404.90 × 93,400.60
  4. Step 4: Simplify right side
    315,045.40x = 44,122,901,102.94
  5. Step 5: Solve for x
    x = 44,122,901,102.94/315,045.40
  6. Step 6: Final answer
    x = 140,052.52

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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.