Home / 380,513.16-525,079.26-210,743.64

Finding the Fourth Proportional to 380,513.16, 525,079.26 and 210,743.64

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Solution

The fourth proportional to 380,513.16, 525,079.26 and 210,743.64 is: 290,810.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,513.16 : 525,079.26 = 210,743.64 : x
  2. Step 2: Convert to fraction form
    380,513.16/525,079.26 = 210,743.64/x
  3. Step 3: Cross multiply
    380,513.16x = 525,079.26 × 210,743.64
  4. Step 4: Simplify right side
    380,513.16x = 110,657,114,540.91
  5. Step 5: Solve for x
    x = 110,657,114,540.91/380,513.16
  6. Step 6: Final answer
    x = 290,810.22

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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.