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Finding the Fourth Proportional to 289,594.40, 434,413.20 and 102,581.60

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Solution

The fourth proportional to 289,594.40, 434,413.20 and 102,581.60 is: 153,880.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,594.40 : 434,413.20 = 102,581.60 : x
  2. Step 2: Convert to fraction form
    289,594.40/434,413.20 = 102,581.60/x
  3. Step 3: Cross multiply
    289,594.40x = 434,413.20 × 102,581.60
  4. Step 4: Simplify right side
    289,594.40x = 44,562,801,117.12
  5. Step 5: Solve for x
    x = 44,562,801,117.12/289,594.40
  6. Step 6: Final answer
    x = 153,880.05

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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.