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Finding the Fourth Proportional to 518,148.48, 715,046.52 and 300,399.60

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Solution

The fourth proportional to 518,148.48, 715,046.52 and 300,399.60 is: 414,552.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,148.48 : 715,046.52 = 300,399.60 : x
  2. Step 2: Convert to fraction form
    518,148.48/715,046.52 = 300,399.60/x
  3. Step 3: Cross multiply
    518,148.48x = 715,046.52 × 300,399.60
  4. Step 4: Simplify right side
    518,148.48x = 214,799,688,589.39
  5. Step 5: Solve for x
    x = 214,799,688,589.39/518,148.48
  6. Step 6: Final answer
    x = 414,552.39

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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.