Home / 380,853.91-525,578.40-211,088.04

Finding the Fourth Proportional to 380,853.91, 525,578.40 and 211,088.04

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Solution

The fourth proportional to 380,853.91, 525,578.40 and 211,088.04 is: 291,301.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,853.91 : 525,578.40 = 211,088.04 : x
  2. Step 2: Convert to fraction form
    380,853.91/525,578.40 = 211,088.04/x
  3. Step 3: Cross multiply
    380,853.91x = 525,578.40 × 211,088.04
  4. Step 4: Simplify right side
    380,853.91x = 110,943,312,351.42
  5. Step 5: Solve for x
    x = 110,943,312,351.42/380,853.91
  6. Step 6: Final answer
    x = 291,301.49

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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.