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Finding the Fourth Proportional to 311,525.40, 429,906.74 and 175,561.46

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Solution

The fourth proportional to 311,525.40, 429,906.74 and 175,561.46 is: 242,275.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,525.40 : 429,906.74 = 175,561.46 : x
  2. Step 2: Convert to fraction form
    311,525.40/429,906.74 = 175,561.46/x
  3. Step 3: Cross multiply
    311,525.40x = 429,906.74 × 175,561.46
  4. Step 4: Simplify right side
    311,525.40x = 75,475,054,938.24
  5. Step 5: Solve for x
    x = 75,475,054,938.24/311,525.40
  6. Step 6: Final answer
    x = 242,275.77

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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.