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Finding the Fourth Proportional to 625,430.94, 938,215.38 and 198,867.00

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Solution

The fourth proportional to 625,430.94, 938,215.38 and 198,867.00 is: 298,322.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,430.94 : 938,215.38 = 198,867.00 : x
  2. Step 2: Convert to fraction form
    625,430.94/938,215.38 = 198,867.00/x
  3. Step 3: Cross multiply
    625,430.94x = 938,215.38 × 198,867.00
  4. Step 4: Simplify right side
    625,430.94x = 186,580,076,401.74
  5. Step 5: Solve for x
    x = 186,580,076,401.74/625,430.94
  6. Step 6: Final answer
    x = 298,322.43

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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.