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Finding the Fourth Proportional to 311,526.93, 429,906.90 and 168,286.93

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Solution

The fourth proportional to 311,526.93, 429,906.90 and 168,286.93 is: 232,235.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,526.93 : 429,906.90 = 168,286.93 : x
  2. Step 2: Convert to fraction form
    311,526.93/429,906.90 = 168,286.93/x
  3. Step 3: Cross multiply
    311,526.93x = 429,906.90 × 168,286.93
  4. Step 4: Simplify right side
    311,526.93x = 72,347,712,386.82
  5. Step 5: Solve for x
    x = 72,347,712,386.82/311,526.93
  6. Step 6: Final answer
    x = 232,235.82

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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.