Home / 289,020.80-433,239.60-131,362.40

Finding the Fourth Proportional to 289,020.80, 433,239.60 and 131,362.40

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Solution

The fourth proportional to 289,020.80, 433,239.60 and 131,362.40 is: 196,911.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,020.80 : 433,239.60 = 131,362.40 : x
  2. Step 2: Convert to fraction form
    289,020.80/433,239.60 = 131,362.40/x
  3. Step 3: Cross multiply
    289,020.80x = 433,239.60 × 131,362.40
  4. Step 4: Simplify right side
    289,020.80x = 56,911,393,631.04
  5. Step 5: Solve for x
    x = 56,911,393,631.04/289,020.80
  6. Step 6: Final answer
    x = 196,911.07

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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.