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Finding the Fourth Proportional to 289,374.60, 433,932.30 and 131,521.80

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Solution

The fourth proportional to 289,374.60, 433,932.30 and 131,521.80 is: 197,223.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,374.60 : 433,932.30 = 131,521.80 : x
  2. Step 2: Convert to fraction form
    289,374.60/433,932.30 = 131,521.80/x
  3. Step 3: Cross multiply
    289,374.60x = 433,932.30 × 131,521.80
  4. Step 4: Simplify right side
    289,374.60x = 57,071,557,174.14
  5. Step 5: Solve for x
    x = 57,071,557,174.14/289,374.60
  6. Step 6: Final answer
    x = 197,223.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.