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Finding the Fourth Proportional to 402,306.94, 555,181.28 and 221,014.97

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Solution

The fourth proportional to 402,306.94, 555,181.28 and 221,014.97 is: 304,999.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,306.94 : 555,181.28 = 221,014.97 : x
  2. Step 2: Convert to fraction form
    402,306.94/555,181.28 = 221,014.97/x
  3. Step 3: Cross multiply
    402,306.94x = 555,181.28 × 221,014.97
  4. Step 4: Simplify right side
    402,306.94x = 122,703,373,943.76
  5. Step 5: Solve for x
    x = 122,703,373,943.76/402,306.94
  6. Step 6: Final answer
    x = 304,999.40

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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.