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Finding the Fourth Proportional to 305,536.88, 421,525.17 and 225,156.13

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Solution

The fourth proportional to 305,536.88, 421,525.17 and 225,156.13 is: 310,630.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,536.88 : 421,525.17 = 225,156.13 : x
  2. Step 2: Convert to fraction form
    305,536.88/421,525.17 = 225,156.13/x
  3. Step 3: Cross multiply
    305,536.88x = 421,525.17 × 225,156.13
  4. Step 4: Simplify right side
    305,536.88x = 94,908,974,920.98
  5. Step 5: Solve for x
    x = 94,908,974,920.98/305,536.88
  6. Step 6: Final answer
    x = 310,630.17

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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.