Home / 400,787.19-553,086.32-219,499.55

Finding the Fourth Proportional to 400,787.19, 553,086.32 and 219,499.55

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Solution

The fourth proportional to 400,787.19, 553,086.32 and 219,499.55 is: 302,909.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,787.19 : 553,086.32 = 219,499.55 : x
  2. Step 2: Convert to fraction form
    400,787.19/553,086.32 = 219,499.55/x
  3. Step 3: Cross multiply
    400,787.19x = 553,086.32 × 219,499.55
  4. Step 4: Simplify right side
    400,787.19x = 121,402,200,282.62
  5. Step 5: Solve for x
    x = 121,402,200,282.62/400,787.19
  6. Step 6: Final answer
    x = 302,909.38

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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.