Home / 289,343.80-433,724.10-131,685.40

Finding the Fourth Proportional to 289,343.80, 433,724.10 and 131,685.40

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Solution

The fourth proportional to 289,343.80, 433,724.10 and 131,685.40 is: 197,395.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,343.80 : 433,724.10 = 131,685.40 : x
  2. Step 2: Convert to fraction form
    289,343.80/433,724.10 = 131,685.40/x
  3. Step 3: Cross multiply
    289,343.80x = 433,724.10 × 131,685.40
  4. Step 4: Simplify right side
    289,343.80x = 57,115,131,598.14
  5. Step 5: Solve for x
    x = 57,115,131,598.14/289,343.80
  6. Step 6: Final answer
    x = 197,395.39

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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.