Home / 380,655.06-525,281.22-210,876.90

Finding the Fourth Proportional to 380,655.06, 525,281.22 and 210,876.90

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Solution

The fourth proportional to 380,655.06, 525,281.22 and 210,876.90 is: 290,997.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,655.06 : 525,281.22 = 210,876.90 : x
  2. Step 2: Convert to fraction form
    380,655.06/525,281.22 = 210,876.90/x
  3. Step 3: Cross multiply
    380,655.06x = 525,281.22 × 210,876.90
  4. Step 4: Simplify right side
    380,655.06x = 110,769,675,301.82
  5. Step 5: Solve for x
    x = 110,769,675,301.82/380,655.06
  6. Step 6: Final answer
    x = 290,997.51

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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.