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Finding the Fourth Proportional to 342,031.85, 471,888.87 and 221,325.85

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Solution

The fourth proportional to 342,031.85, 471,888.87 and 221,325.85 is: 305,355.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,031.85 : 471,888.87 = 221,325.85 : x
  2. Step 2: Convert to fraction form
    342,031.85/471,888.87 = 221,325.85/x
  3. Step 3: Cross multiply
    342,031.85x = 471,888.87 × 221,325.85
  4. Step 4: Simplify right side
    342,031.85x = 104,441,202,898.85
  5. Step 5: Solve for x
    x = 104,441,202,898.85/342,031.85
  6. Step 6: Final answer
    x = 305,355.20

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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.