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Finding the Fourth Proportional to 348,718.95, 522,578.90 and 198,649.35

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Solution

The fourth proportional to 348,718.95, 522,578.90 and 198,649.35 is: 297,689.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    348,718.95 : 522,578.90 = 198,649.35 : x
  2. Step 2: Convert to fraction form
    348,718.95/522,578.90 = 198,649.35/x
  3. Step 3: Cross multiply
    348,718.95x = 522,578.90 × 198,649.35
  4. Step 4: Simplify right side
    348,718.95x = 103,809,959,305.34
  5. Step 5: Solve for x
    x = 103,809,959,305.34/348,718.95
  6. Step 6: Final answer
    x = 297,689.47

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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.