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Finding the Fourth Proportional to 372,572.51, 513,170.64 and 286,366.64

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Solution

The fourth proportional to 372,572.51, 513,170.64 and 286,366.64 is: 394,433.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,572.51 : 513,170.64 = 286,366.64 : x
  2. Step 2: Convert to fraction form
    372,572.51/513,170.64 = 286,366.64/x
  3. Step 3: Cross multiply
    372,572.51x = 513,170.64 × 286,366.64
  4. Step 4: Simplify right side
    372,572.51x = 146,954,949,357.60
  5. Step 5: Solve for x
    x = 146,954,949,357.60/372,572.51
  6. Step 6: Final answer
    x = 394,433.16

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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.