Home / 380,708.28-525,180.89-258,159.22

Finding the Fourth Proportional to 380,708.28, 525,180.89 and 258,159.22

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Solution

The fourth proportional to 380,708.28, 525,180.89 and 258,159.22 is: 356,126.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,708.28 : 525,180.89 = 258,159.22 : x
  2. Step 2: Convert to fraction form
    380,708.28/525,180.89 = 258,159.22/x
  3. Step 3: Cross multiply
    380,708.28x = 525,180.89 × 258,159.22
  4. Step 4: Simplify right side
    380,708.28x = 135,580,288,253.75
  5. Step 5: Solve for x
    x = 135,580,288,253.75/380,708.28
  6. Step 6: Final answer
    x = 356,126.45

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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.