Home / 355,921.80-534,185.10-145,710.60

Finding the Fourth Proportional to 355,921.80, 534,185.10 and 145,710.60

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Solution

The fourth proportional to 355,921.80, 534,185.10 and 145,710.60 is: 218,689.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,921.80 : 534,185.10 = 145,710.60 : x
  2. Step 2: Convert to fraction form
    355,921.80/534,185.10 = 145,710.60/x
  3. Step 3: Cross multiply
    355,921.80x = 534,185.10 × 145,710.60
  4. Step 4: Simplify right side
    355,921.80x = 77,836,431,432.06
  5. Step 5: Solve for x
    x = 77,836,431,432.06/355,921.80
  6. Step 6: Final answer
    x = 218,689.70

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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.