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Finding the Fourth Proportional to 342,902.21, 473,102.67 and 221,851.76

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Solution

The fourth proportional to 342,902.21, 473,102.67 and 221,851.76 is: 306,089.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,902.21 : 473,102.67 = 221,851.76 : x
  2. Step 2: Convert to fraction form
    342,902.21/473,102.67 = 221,851.76/x
  3. Step 3: Cross multiply
    342,902.21x = 473,102.67 × 221,851.76
  4. Step 4: Simplify right side
    342,902.21x = 104,958,661,127.83
  5. Step 5: Solve for x
    x = 104,958,661,127.83/342,902.21
  6. Step 6: Final answer
    x = 306,089.19

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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.