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Finding the Fourth Proportional to 472,052.16, 708,078.24 and 139,628.16

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Solution

The fourth proportional to 472,052.16, 708,078.24 and 139,628.16 is: 209,442.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    472,052.16 : 708,078.24 = 139,628.16 : x
  2. Step 2: Convert to fraction form
    472,052.16/708,078.24 = 139,628.16/x
  3. Step 3: Cross multiply
    472,052.16x = 708,078.24 × 139,628.16
  4. Step 4: Simplify right side
    472,052.16x = 98,867,661,787.24
  5. Step 5: Solve for x
    x = 98,867,661,787.24/472,052.16
  6. Step 6: Final answer
    x = 209,442.24

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Similar ratio
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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.