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Finding the Fourth Proportional to 317,400.39, 437,980.64 and 190,072.71

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Solution

The fourth proportional to 317,400.39, 437,980.64 and 190,072.71 is: 262,281.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,400.39 : 437,980.64 = 190,072.71 : x
  2. Step 2: Convert to fraction form
    317,400.39/437,980.64 = 190,072.71/x
  3. Step 3: Cross multiply
    317,400.39x = 437,980.64 × 190,072.71
  4. Step 4: Simplify right side
    317,400.39x = 83,248,166,221.97
  5. Step 5: Solve for x
    x = 83,248,166,221.97/317,400.39
  6. Step 6: Final answer
    x = 262,281.23

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1.5x scale

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.