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Finding the Fourth Proportional to 311,575.71, 429,973.83 and 168,335.31

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Solution

The fourth proportional to 311,575.71, 429,973.83 and 168,335.31 is: 232,302.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,575.71 : 429,973.83 = 168,335.31 : x
  2. Step 2: Convert to fraction form
    311,575.71/429,973.83 = 168,335.31/x
  3. Step 3: Cross multiply
    311,575.71x = 429,973.83 × 168,335.31
  4. Step 4: Simplify right side
    311,575.71x = 72,379,777,964.94
  5. Step 5: Solve for x
    x = 72,379,777,964.94/311,575.71
  6. Step 6: Final answer
    x = 232,302.38

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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.