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Finding the Fourth Proportional to 370,519.45, 511,249.55 and 207,178.90

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Solution

The fourth proportional to 370,519.45, 511,249.55 and 207,178.90 is: 285,869.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    370,519.45 : 511,249.55 = 207,178.90 : x
  2. Step 2: Convert to fraction form
    370,519.45/511,249.55 = 207,178.90/x
  3. Step 3: Cross multiply
    370,519.45x = 511,249.55 × 207,178.90
  4. Step 4: Simplify right side
    370,519.45x = 105,920,115,802.35
  5. Step 5: Solve for x
    x = 105,920,115,802.35/370,519.45
  6. Step 6: Final answer
    x = 285,869.25

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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.