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Finding the Fourth Proportional to 402,401.67, 555,314.14 and 221,125.29

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Solution

The fourth proportional to 402,401.67, 555,314.14 and 221,125.29 is: 305,152.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,401.67 : 555,314.14 = 221,125.29 : x
  2. Step 2: Convert to fraction form
    402,401.67/555,314.14 = 221,125.29/x
  3. Step 3: Cross multiply
    402,401.67x = 555,314.14 × 221,125.29
  4. Step 4: Simplify right side
    402,401.67x = 122,793,998,442.58
  5. Step 5: Solve for x
    x = 122,793,998,442.58/402,401.67
  6. Step 6: Final answer
    x = 305,152.81

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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.