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Finding the Fourth Proportional to 368,667.45, 553,019.40 and 191,520.45

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Solution

The fourth proportional to 368,667.45, 553,019.40 and 191,520.45 is: 287,290.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,667.45 : 553,019.40 = 191,520.45 : x
  2. Step 2: Convert to fraction form
    368,667.45/553,019.40 = 191,520.45/x
  3. Step 3: Cross multiply
    368,667.45x = 553,019.40 × 191,520.45
  4. Step 4: Simplify right side
    368,667.45x = 105,914,524,346.73
  5. Step 5: Solve for x
    x = 105,914,524,346.73/368,667.45
  6. Step 6: Final answer
    x = 287,290.14

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.