Home / 305,768.20-459,089.70-217,413.40

Finding the Fourth Proportional to 305,768.20, 459,089.70 and 217,413.40

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Solution

The fourth proportional to 305,768.20, 459,089.70 and 217,413.40 is: 326,431.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,768.20 : 459,089.70 = 217,413.40 : x
  2. Step 2: Convert to fraction form
    305,768.20/459,089.70 = 217,413.40/x
  3. Step 3: Cross multiply
    305,768.20x = 459,089.70 × 217,413.40
  4. Step 4: Simplify right side
    305,768.20x = 99,812,252,581.98
  5. Step 5: Solve for x
    x = 99,812,252,581.98/305,768.20
  6. Step 6: Final answer
    x = 326,431.11

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1.5x scale

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.