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Finding the Fourth Proportional to 289,063.70, 433,725.15 and 131,210.90

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Solution

The fourth proportional to 289,063.70, 433,725.15 and 131,210.90 is: 196,875.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,063.70 : 433,725.15 = 131,210.90 : x
  2. Step 2: Convert to fraction form
    289,063.70/433,725.15 = 131,210.90/x
  3. Step 3: Cross multiply
    289,063.70x = 433,725.15 × 131,210.90
  4. Step 4: Simplify right side
    289,063.70x = 56,909,467,284.14
  5. Step 5: Solve for x
    x = 56,909,467,284.14/289,063.70
  6. Step 6: Final answer
    x = 196,875.18

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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.