Home / 385,413.03-578,135.34-104,930.28

Finding the Fourth Proportional to 385,413.03, 578,135.34 and 104,930.28

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Solution

The fourth proportional to 385,413.03, 578,135.34 and 104,930.28 is: 157,399.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,413.03 : 578,135.34 = 104,930.28 : x
  2. Step 2: Convert to fraction form
    385,413.03/578,135.34 = 104,930.28/x
  3. Step 3: Cross multiply
    385,413.03x = 578,135.34 × 104,930.28
  4. Step 4: Simplify right side
    385,413.03x = 60,663,903,104.10
  5. Step 5: Solve for x
    x = 60,663,903,104.10/385,413.03
  6. Step 6: Final answer
    x = 157,399.72

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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.