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Finding the Fourth Proportional to 243,403.40, 365,040.30 and 74,923.40

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Solution

The fourth proportional to 243,403.40, 365,040.30 and 74,923.40 is: 112,365.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,403.40 : 365,040.30 = 74,923.40 : x
  2. Step 2: Convert to fraction form
    243,403.40/365,040.30 = 74,923.40/x
  3. Step 3: Cross multiply
    243,403.40x = 365,040.30 × 74,923.40
  4. Step 4: Simplify right side
    243,403.40x = 27,350,060,413.02
  5. Step 5: Solve for x
    x = 27,350,060,413.02/243,403.40
  6. Step 6: Final answer
    x = 112,365.15

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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.