Home / 261,409.10-392,243.37-103,634.06

Finding the Fourth Proportional to 261,409.10, 392,243.37 and 103,634.06

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Solution

The fourth proportional to 261,409.10, 392,243.37 and 103,634.06 is: 155,502.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,409.10 : 392,243.37 = 103,634.06 : x
  2. Step 2: Convert to fraction form
    261,409.10/392,243.37 = 103,634.06/x
  3. Step 3: Cross multiply
    261,409.10x = 392,243.37 × 103,634.06
  4. Step 4: Simplify right side
    261,409.10x = 40,649,772,941.18
  5. Step 5: Solve for x
    x = 40,649,772,941.18/261,409.10
  6. Step 6: Final answer
    x = 155,502.52

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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.