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Finding the Fourth Proportional to 372,435.47, 513,925.44 and 209,054.56

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Solution

The fourth proportional to 372,435.47, 513,925.44 and 209,054.56 is: 288,475.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,435.47 : 513,925.44 = 209,054.56 : x
  2. Step 2: Convert to fraction form
    372,435.47/513,925.44 = 209,054.56/x
  3. Step 3: Cross multiply
    372,435.47x = 513,925.44 × 209,054.56
  4. Step 4: Simplify right side
    372,435.47x = 107,438,458,092.01
  5. Step 5: Solve for x
    x = 107,438,458,092.01/372,435.47
  6. Step 6: Final answer
    x = 288,475.36

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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.