Home / 261,869.10-392,795.86-72,340.87

Finding the Fourth Proportional to 261,869.10, 392,795.86 and 72,340.87

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Solution

The fourth proportional to 261,869.10, 392,795.86 and 72,340.87 is: 108,509.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,869.10 : 392,795.86 = 72,340.87 : x
  2. Step 2: Convert to fraction form
    261,869.10/392,795.86 = 72,340.87/x
  3. Step 3: Cross multiply
    261,869.10x = 392,795.86 × 72,340.87
  4. Step 4: Simplify right side
    261,869.10x = 28,415,194,855.37
  5. Step 5: Solve for x
    x = 28,415,194,855.37/261,869.10
  6. Step 6: Final answer
    x = 108,509.15

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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.