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Finding the Fourth Proportional to 304,430.40, 420,115.41 and 177,110.55

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Solution

The fourth proportional to 304,430.40, 420,115.41 and 177,110.55 is: 244,413.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    304,430.40 : 420,115.41 = 177,110.55 : x
  2. Step 2: Convert to fraction form
    304,430.40/420,115.41 = 177,110.55/x
  3. Step 3: Cross multiply
    304,430.40x = 420,115.41 × 177,110.55
  4. Step 4: Simplify right side
    304,430.40x = 74,406,871,328.58
  5. Step 5: Solve for x
    x = 74,406,871,328.58/304,430.40
  6. Step 6: Final answer
    x = 244,413.41

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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.