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Finding the Fourth Proportional to 642,604.50, 963,955.26 and 216,141.57

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Solution

The fourth proportional to 642,604.50, 963,955.26 and 216,141.57 is: 324,228.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,604.50 : 963,955.26 = 216,141.57 : x
  2. Step 2: Convert to fraction form
    642,604.50/963,955.26 = 216,141.57/x
  3. Step 3: Cross multiply
    642,604.50x = 963,955.26 × 216,141.57
  4. Step 4: Simplify right side
    642,604.50x = 208,350,803,306.16
  5. Step 5: Solve for x
    x = 208,350,803,306.16/642,604.50
  6. Step 6: Final answer
    x = 324,228.67

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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.