Home / 380,549.28-525,151.44-210,779.76

Finding the Fourth Proportional to 380,549.28, 525,151.44 and 210,779.76

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Solution

The fourth proportional to 380,549.28, 525,151.44 and 210,779.76 is: 290,872.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,549.28 : 525,151.44 = 210,779.76 : x
  2. Step 2: Convert to fraction form
    380,549.28/525,151.44 = 210,779.76/x
  3. Step 3: Cross multiply
    380,549.28x = 525,151.44 × 210,779.76
  4. Step 4: Simplify right side
    380,549.28x = 110,691,294,486.85
  5. Step 5: Solve for x
    x = 110,691,294,486.85/380,549.28
  6. Step 6: Final answer
    x = 290,872.43

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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.