Home / 380,723.72-525,390.90-210,956.36

Finding the Fourth Proportional to 380,723.72, 525,390.90 and 210,956.36

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Solution

The fourth proportional to 380,723.72, 525,390.90 and 210,956.36 is: 291,115.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,723.72 : 525,390.90 = 210,956.36 : x
  2. Step 2: Convert to fraction form
    380,723.72/525,390.90 = 210,956.36/x
  3. Step 3: Cross multiply
    380,723.72x = 525,390.90 × 210,956.36
  4. Step 4: Simplify right side
    380,723.72x = 110,834,551,841.12
  5. Step 5: Solve for x
    x = 110,834,551,841.12/380,723.72
  6. Step 6: Final answer
    x = 291,115.44

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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.