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Finding the Fourth Proportional to 425,413.02, 638,211.80 and 125,914.64

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Solution

The fourth proportional to 425,413.02, 638,211.80 and 125,914.64 is: 188,899.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,413.02 : 638,211.80 = 125,914.64 : x
  2. Step 2: Convert to fraction form
    425,413.02/638,211.80 = 125,914.64/x
  3. Step 3: Cross multiply
    425,413.02x = 638,211.80 × 125,914.64
  4. Step 4: Simplify right side
    425,413.02x = 80,360,210,006.71
  5. Step 5: Solve for x
    x = 80,360,210,006.71/425,413.02
  6. Step 6: Final answer
    x = 188,899.27

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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.