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Finding the Fourth Proportional to 375,290.56, 517,901.76 and 203,210.40

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Solution

The fourth proportional to 375,290.56, 517,901.76 and 203,210.40 is: 280,430.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    375,290.56 : 517,901.76 = 203,210.40 : x
  2. Step 2: Convert to fraction form
    375,290.56/517,901.76 = 203,210.40/x
  3. Step 3: Cross multiply
    375,290.56x = 517,901.76 × 203,210.40
  4. Step 4: Simplify right side
    375,290.56x = 105,243,023,810.30
  5. Step 5: Solve for x
    x = 105,243,023,810.30/375,290.56
  6. Step 6: Final answer
    x = 280,430.78

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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.