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Finding the Fourth Proportional to 372,019.95, 513,364.55 and 208,667.48

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Solution

The fourth proportional to 372,019.95, 513,364.55 and 208,667.48 is: 287,948.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,019.95 : 513,364.55 = 208,667.48 : x
  2. Step 2: Convert to fraction form
    372,019.95/513,364.55 = 208,667.48/x
  3. Step 3: Cross multiply
    372,019.95x = 513,364.55 × 208,667.48
  4. Step 4: Simplify right side
    372,019.95x = 107,122,483,359.67
  5. Step 5: Solve for x
    x = 107,122,483,359.67/372,019.95
  6. Step 6: Final answer
    x = 287,948.22

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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.