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Finding the Fourth Proportional to 518,232, 715,339.14 and 303,441.12

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Solution

The fourth proportional to 518,232, 715,339.14 and 303,441.12 is: 418,853.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,232 : 715,339.14 = 303,441.12 : x
  2. Step 2: Convert to fraction form
    518,232/715,339.14 = 303,441.12/x
  3. Step 3: Cross multiply
    518,232x = 715,339.14 × 303,441.12
  4. Step 4: Simplify right side
    518,232x = 217,063,309,821.44
  5. Step 5: Solve for x
    x = 217,063,309,821.44/518,232
  6. Step 6: Final answer
    x = 418,853.54

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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.