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Finding the Fourth Proportional to 317,671.16, 438,400.50 and 190,344.02

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Solution

The fourth proportional to 317,671.16, 438,400.50 and 190,344.02 is: 262,683.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,671.16 : 438,400.50 = 190,344.02 : x
  2. Step 2: Convert to fraction form
    317,671.16/438,400.50 = 190,344.02/x
  3. Step 3: Cross multiply
    317,671.16x = 438,400.50 × 190,344.02
  4. Step 4: Simplify right side
    317,671.16x = 83,446,913,540.01
  5. Step 5: Solve for x
    x = 83,446,913,540.01/317,671.16
  6. Step 6: Final answer
    x = 262,683.32

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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.