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Finding the Fourth Proportional to 317,630.66, 438,344.61 and 190,303.52

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Solution

The fourth proportional to 317,630.66, 438,344.61 and 190,303.52 is: 262,627.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,630.66 : 438,344.61 = 190,303.52 : x
  2. Step 2: Convert to fraction form
    317,630.66/438,344.61 = 190,303.52/x
  3. Step 3: Cross multiply
    317,630.66x = 438,344.61 × 190,303.52
  4. Step 4: Simplify right side
    317,630.66x = 83,418,522,256.03
  5. Step 5: Solve for x
    x = 83,418,522,256.03/317,630.66
  6. Step 6: Final answer
    x = 262,627.42

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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.