Home / 208,541.02-312,855.28-90,229.18

Finding the Fourth Proportional to 208,541.02, 312,855.28 and 90,229.18

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Solution

The fourth proportional to 208,541.02, 312,855.28 and 90,229.18 is: 135,362.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,541.02 : 312,855.28 = 90,229.18 : x
  2. Step 2: Convert to fraction form
    208,541.02/312,855.28 = 90,229.18/x
  3. Step 3: Cross multiply
    208,541.02x = 312,855.28 × 90,229.18
  4. Step 4: Simplify right side
    208,541.02x = 28,228,675,373.07
  5. Step 5: Solve for x
    x = 28,228,675,373.07/208,541.02
  6. Step 6: Final answer
    x = 135,362.70

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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.