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Finding the Fourth Proportional to 317,672.16, 438,401.88 and 190,345.02

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Solution

The fourth proportional to 317,672.16, 438,401.88 and 190,345.02 is: 262,684.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,672.16 : 438,401.88 = 190,345.02 : x
  2. Step 2: Convert to fraction form
    317,672.16/438,401.88 = 190,345.02/x
  3. Step 3: Cross multiply
    317,672.16x = 438,401.88 × 190,345.02
  4. Step 4: Simplify right side
    317,672.16x = 83,447,614,616.64
  5. Step 5: Solve for x
    x = 83,447,614,616.64/317,672.16
  6. Step 6: Final answer
    x = 262,684.70

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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.