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Finding the Fourth Proportional to 375,135.47, 517,686.88 and 203,053.40

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Solution

The fourth proportional to 375,135.47, 517,686.88 and 203,053.40 is: 280,213.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    375,135.47 : 517,686.88 = 203,053.40 : x
  2. Step 2: Convert to fraction form
    375,135.47/517,686.88 = 203,053.40/x
  3. Step 3: Cross multiply
    375,135.47x = 517,686.88 × 203,053.40
  4. Step 4: Simplify right side
    375,135.47x = 105,118,081,905.98
  5. Step 5: Solve for x
    x = 105,118,081,905.98/375,135.47
  6. Step 6: Final answer
    x = 280,213.66

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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.