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Finding the Fourth Proportional to 375,411.89, 518,069.05 and 203,330.23

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Solution

The fourth proportional to 375,411.89, 518,069.05 and 203,330.23 is: 280,596.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    375,411.89 : 518,069.05 = 203,330.23 : x
  2. Step 2: Convert to fraction form
    375,411.89/518,069.05 = 203,330.23/x
  3. Step 3: Cross multiply
    375,411.89x = 518,069.05 × 203,330.23
  4. Step 4: Simplify right side
    375,411.89x = 105,339,095,485.39
  5. Step 5: Solve for x
    x = 105,339,095,485.39/375,411.89
  6. Step 6: Final answer
    x = 280,596.06

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.