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Finding the Fourth Proportional to 375,665.85, 518,417.72 and 203,588.74

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Solution

The fourth proportional to 375,665.85, 518,417.72 and 203,588.74 is: 280,951.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    375,665.85 : 518,417.72 = 203,588.74 : x
  2. Step 2: Convert to fraction form
    375,665.85/518,417.72 = 203,588.74/x
  3. Step 3: Cross multiply
    375,665.85x = 518,417.72 × 203,588.74
  4. Step 4: Simplify right side
    375,665.85x = 105,544,010,802.01
  5. Step 5: Solve for x
    x = 105,544,010,802.01/375,665.85
  6. Step 6: Final answer
    x = 280,951.84

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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.