Home / 261,633.24-392,515.47-103,809.60

Finding the Fourth Proportional to 261,633.24, 392,515.47 and 103,809.60

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Solution

The fourth proportional to 261,633.24, 392,515.47 and 103,809.60 is: 155,740.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,633.24 : 392,515.47 = 103,809.60 : x
  2. Step 2: Convert to fraction form
    261,633.24/392,515.47 = 103,809.60/x
  3. Step 3: Cross multiply
    261,633.24x = 392,515.47 × 103,809.60
  4. Step 4: Simplify right side
    261,633.24x = 40,746,873,934.51
  5. Step 5: Solve for x
    x = 40,746,873,934.51/261,633.24
  6. Step 6: Final answer
    x = 155,740.43

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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.