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Finding the Fourth Proportional to 245,612.07, 338,820.62 and 143,570.86

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Solution

The fourth proportional to 245,612.07, 338,820.62 and 143,570.86 is: 198,055.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,612.07 : 338,820.62 = 143,570.86 : x
  2. Step 2: Convert to fraction form
    245,612.07/338,820.62 = 143,570.86/x
  3. Step 3: Cross multiply
    245,612.07x = 338,820.62 × 143,570.86
  4. Step 4: Simplify right side
    245,612.07x = 48,644,766,234.23
  5. Step 5: Solve for x
    x = 48,644,766,234.23/245,612.07
  6. Step 6: Final answer
    x = 198,055.28

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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.