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Finding the Fourth Proportional to 538,903.90, 808,647.45 and 239,430.70

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Solution

The fourth proportional to 538,903.90, 808,647.45 and 239,430.70 is: 359,275.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    538,903.90 : 808,647.45 = 239,430.70 : x
  2. Step 2: Convert to fraction form
    538,903.90/808,647.45 = 239,430.70/x
  3. Step 3: Cross multiply
    538,903.90x = 808,647.45 × 239,430.70
  4. Step 4: Simplify right side
    538,903.90x = 193,615,025,006.72
  5. Step 5: Solve for x
    x = 193,615,025,006.72/538,903.90
  6. Step 6: Final answer
    x = 359,275.61

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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.