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Finding the Fourth Proportional to 342,885.04, 473,079 and 221,834.64

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Solution

The fourth proportional to 342,885.04, 473,079 and 221,834.64 is: 306,065.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,885.04 : 473,079 = 221,834.64 : x
  2. Step 2: Convert to fraction form
    342,885.04/473,079 = 221,834.64/x
  3. Step 3: Cross multiply
    342,885.04x = 473,079 × 221,834.64
  4. Step 4: Simplify right side
    342,885.04x = 104,945,309,656.56
  5. Step 5: Solve for x
    x = 104,945,309,656.56/342,885.04
  6. Step 6: Final answer
    x = 306,065.58

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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.