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Finding the Fourth Proportional to 642,052.07, 963,119.62 and 215,570.67

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Solution

The fourth proportional to 642,052.07, 963,119.62 and 215,570.67 is: 323,369.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,052.07 : 963,119.62 = 215,570.67 : x
  2. Step 2: Convert to fraction form
    642,052.07/963,119.62 = 215,570.67/x
  3. Step 3: Cross multiply
    642,052.07x = 963,119.62 × 215,570.67
  4. Step 4: Simplify right side
    642,052.07x = 207,620,337,218.73
  5. Step 5: Solve for x
    x = 207,620,337,218.73/642,052.07
  6. Step 6: Final answer
    x = 323,369.94

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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.