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Finding the Fourth Proportional to 342,911.79, 473,115.87 and 221,861.34

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Solution

The fourth proportional to 342,911.79, 473,115.87 and 221,861.34 is: 306,102.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,911.79 : 473,115.87 = 221,861.34 : x
  2. Step 2: Convert to fraction form
    342,911.79/473,115.87 = 221,861.34/x
  3. Step 3: Cross multiply
    342,911.79x = 473,115.87 × 221,861.34
  4. Step 4: Simplify right side
    342,911.79x = 104,966,120,893.47
  5. Step 5: Solve for x
    x = 104,966,120,893.47/342,911.79
  6. Step 6: Final answer
    x = 306,102.40

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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.