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Finding the Fourth Proportional to 316,671.36, 437,007.04 and 171,478.72

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Solution

The fourth proportional to 316,671.36, 437,007.04 and 171,478.72 is: 236,640.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,671.36 : 437,007.04 = 171,478.72 : x
  2. Step 2: Convert to fraction form
    316,671.36/437,007.04 = 171,478.72/x
  3. Step 3: Cross multiply
    316,671.36x = 437,007.04 × 171,478.72
  4. Step 4: Simplify right side
    316,671.36x = 74,937,407,850.19
  5. Step 5: Solve for x
    x = 74,937,407,850.19/316,671.36
  6. Step 6: Final answer
    x = 236,640.94

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.