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Finding the Fourth Proportional to 311,528.68, 429,909.31 and 168,288.68

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Solution

The fourth proportional to 311,528.68, 429,909.31 and 168,288.68 is: 232,238.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,528.68 : 429,909.31 = 168,288.68 : x
  2. Step 2: Convert to fraction form
    311,528.68/429,909.31 = 168,288.68/x
  3. Step 3: Cross multiply
    311,528.68x = 429,909.31 × 168,288.68
  4. Step 4: Simplify right side
    311,528.68x = 72,348,870,299.61
  5. Step 5: Solve for x
    x = 72,348,870,299.61/311,528.68
  6. Step 6: Final answer
    x = 232,238.23

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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.