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Finding the Fourth Proportional to 342,330.72, 472,257.24 and 221,510.88

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Solution

The fourth proportional to 342,330.72, 472,257.24 and 221,510.88 is: 305,582.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,330.72 : 472,257.24 = 221,510.88 : x
  2. Step 2: Convert to fraction form
    342,330.72/472,257.24 = 221,510.88/x
  3. Step 3: Cross multiply
    342,330.72x = 472,257.24 × 221,510.88
  4. Step 4: Simplify right side
    342,330.72x = 104,610,116,818.77
  5. Step 5: Solve for x
    x = 104,610,116,818.77/342,330.72
  6. Step 6: Final answer
    x = 305,582.03

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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.