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Finding the Fourth Proportional to 218,413.32, 301,420.08 and 122,926.20

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Solution

The fourth proportional to 218,413.32, 301,420.08 and 122,926.20 is: 169,643.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,413.32 : 301,420.08 = 122,926.20 : x
  2. Step 2: Convert to fraction form
    218,413.32/301,420.08 = 122,926.20/x
  3. Step 3: Cross multiply
    218,413.32x = 301,420.08 × 122,926.20
  4. Step 4: Simplify right side
    218,413.32x = 37,052,425,038.10
  5. Step 5: Solve for x
    x = 37,052,425,038.10/218,413.32
  6. Step 6: Final answer
    x = 169,643.61

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1.5x scale

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.