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Finding the Fourth Proportional to 518,316.67, 715,032.44 and 303,323.63

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Solution

The fourth proportional to 518,316.67, 715,032.44 and 303,323.63 is: 418,443.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,316.67 : 715,032.44 = 303,323.63 : x
  2. Step 2: Convert to fraction form
    518,316.67/715,032.44 = 303,323.63/x
  3. Step 3: Cross multiply
    518,316.67x = 715,032.44 × 303,323.63
  4. Step 4: Simplify right side
    518,316.67x = 216,886,235,268.56
  5. Step 5: Solve for x
    x = 216,886,235,268.56/518,316.67
  6. Step 6: Final answer
    x = 418,443.49

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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.