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Finding the Fourth Proportional to 343,385.10, 473,862.45 and 190,422.90

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Solution

The fourth proportional to 343,385.10, 473,862.45 and 190,422.90 is: 262,778.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,385.10 : 473,862.45 = 190,422.90 : x
  2. Step 2: Convert to fraction form
    343,385.10/473,862.45 = 190,422.90/x
  3. Step 3: Cross multiply
    343,385.10x = 473,862.45 × 190,422.90
  4. Step 4: Simplify right side
    343,385.10x = 90,234,261,930.11
  5. Step 5: Solve for x
    x = 90,234,261,930.11/343,385.10
  6. Step 6: Final answer
    x = 262,778.62

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1.5x scale

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.