Home / 380,816.25-525,526.43-211,061.31

Finding the Fourth Proportional to 380,816.25, 525,526.43 and 211,061.31

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Solution

The fourth proportional to 380,816.25, 525,526.43 and 211,061.31 is: 291,264.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,816.25 : 525,526.43 = 211,061.31 : x
  2. Step 2: Convert to fraction form
    380,816.25/525,526.43 = 211,061.31/x
  3. Step 3: Cross multiply
    380,816.25x = 525,526.43 × 211,061.31
  4. Step 4: Simplify right side
    380,816.25x = 110,918,295,700.12
  5. Step 5: Solve for x
    x = 110,918,295,700.12/380,816.25
  6. Step 6: Final answer
    x = 291,264.61

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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.