Home / 261,880.23-392,758.06-72,336.40

Finding the Fourth Proportional to 261,880.23, 392,758.06 and 72,336.40

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Solution

The fourth proportional to 261,880.23, 392,758.06 and 72,336.40 is: 108,487.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,880.23 : 392,758.06 = 72,336.40 : x
  2. Step 2: Convert to fraction form
    261,880.23/392,758.06 = 72,336.40/x
  3. Step 3: Cross multiply
    261,880.23x = 392,758.06 × 72,336.40
  4. Step 4: Simplify right side
    261,880.23x = 28,410,704,131.38
  5. Step 5: Solve for x
    x = 28,410,704,131.38/261,880.23
  6. Step 6: Final answer
    x = 108,487.40

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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.