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Finding the Fourth Proportional to 318,639.76, 439,735.43 and 175,413.13

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Solution

The fourth proportional to 318,639.76, 439,735.43 and 175,413.13 is: 242,077.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,639.76 : 439,735.43 = 175,413.13 : x
  2. Step 2: Convert to fraction form
    318,639.76/439,735.43 = 175,413.13/x
  3. Step 3: Cross multiply
    318,639.76x = 439,735.43 × 175,413.13
  4. Step 4: Simplify right side
    318,639.76x = 77,135,367,487.39
  5. Step 5: Solve for x
    x = 77,135,367,487.39/318,639.76
  6. Step 6: Final answer
    x = 242,077.03

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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.