Home / 345,904.60-518,856.90-307,413.40

Finding the Fourth Proportional to 345,904.60, 518,856.90 and 307,413.40

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Solution

The fourth proportional to 345,904.60, 518,856.90 and 307,413.40 is: 461,120.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,904.60 : 518,856.90 = 307,413.40 : x
  2. Step 2: Convert to fraction form
    345,904.60/518,856.90 = 307,413.40/x
  3. Step 3: Cross multiply
    345,904.60x = 518,856.90 × 307,413.40
  4. Step 4: Simplify right side
    345,904.60x = 159,503,563,742.46
  5. Step 5: Solve for x
    x = 159,503,563,742.46/345,904.60
  6. Step 6: Final answer
    x = 461,120.10

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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.