Home / 380,810.19-525,496.71-208,695.35

Finding the Fourth Proportional to 380,810.19, 525,496.71 and 208,695.35

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Solution

The fourth proportional to 380,810.19, 525,496.71 and 208,695.35 is: 287,987.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,810.19 : 525,496.71 = 208,695.35 : x
  2. Step 2: Convert to fraction form
    380,810.19/525,496.71 = 208,695.35/x
  3. Step 3: Cross multiply
    380,810.19x = 525,496.71 × 208,695.35
  4. Step 4: Simplify right side
    380,810.19x = 109,668,721,913.65
  5. Step 5: Solve for x
    x = 109,668,721,913.65/380,810.19
  6. Step 6: Final answer
    x = 287,987.88

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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.