Home / 261,403.50-392,105.21-74,415.00

Finding the Fourth Proportional to 261,403.50, 392,105.21 and 74,415.00

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Solution

The fourth proportional to 261,403.50, 392,105.21 and 74,415.00 is: 111,622.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,403.50 : 392,105.21 = 74,415.00 : x
  2. Step 2: Convert to fraction form
    261,403.50/392,105.21 = 74,415.00/x
  3. Step 3: Cross multiply
    261,403.50x = 392,105.21 × 74,415.00
  4. Step 4: Simplify right side
    261,403.50x = 29,178,510,300.47
  5. Step 5: Solve for x
    x = 29,178,510,300.47/261,403.50
  6. Step 6: Final answer
    x = 111,622.49

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1.5x scale

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.