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Finding the Fourth Proportional to 291,609.28, 437,413.93 and 69,993.28

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Solution

The fourth proportional to 291,609.28, 437,413.93 and 69,993.28 is: 104,989.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,609.28 : 437,413.93 = 69,993.28 : x
  2. Step 2: Convert to fraction form
    291,609.28/437,413.93 = 69,993.28/x
  3. Step 3: Cross multiply
    291,609.28x = 437,413.93 × 69,993.28
  4. Step 4: Simplify right side
    291,609.28x = 30,616,036,050.17
  5. Step 5: Solve for x
    x = 30,616,036,050.17/291,609.28
  6. Step 6: Final answer
    x = 104,989.92

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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.