Home / 400,815.65-553,133.94-219,535.22

Finding the Fourth Proportional to 400,815.65, 553,133.94 and 219,535.22

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Solution

The fourth proportional to 400,815.65, 553,133.94 and 219,535.22 is: 302,963.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,815.65 : 553,133.94 = 219,535.22 : x
  2. Step 2: Convert to fraction form
    400,815.65/553,133.94 = 219,535.22/x
  3. Step 3: Cross multiply
    400,815.65x = 553,133.94 × 219,535.22
  4. Step 4: Simplify right side
    400,815.65x = 121,432,381,207.37
  5. Step 5: Solve for x
    x = 121,432,381,207.37/400,815.65
  6. Step 6: Final answer
    x = 302,963.17

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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.