Home / 414,095.20-621,142.80-133,612.45

Finding the Fourth Proportional to 414,095.20, 621,142.80 and 133,612.45

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Solution

The fourth proportional to 414,095.20, 621,142.80 and 133,612.45 is: 200,418.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    414,095.20 : 621,142.80 = 133,612.45 : x
  2. Step 2: Convert to fraction form
    414,095.20/621,142.80 = 133,612.45/x
  3. Step 3: Cross multiply
    414,095.20x = 621,142.80 × 133,612.45
  4. Step 4: Simplify right side
    414,095.20x = 82,992,411,307.86
  5. Step 5: Solve for x
    x = 82,992,411,307.86/414,095.20
  6. Step 6: Final answer
    x = 200,418.68

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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.