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Finding the Fourth Proportional to 380,471.96, 525,050.28 and 219,326.12

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Solution

The fourth proportional to 380,471.96, 525,050.28 and 219,326.12 is: 302,669.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,471.96 : 525,050.28 = 219,326.12 : x
  2. Step 2: Convert to fraction form
    380,471.96/525,050.28 = 219,326.12/x
  3. Step 3: Cross multiply
    380,471.96x = 525,050.28 × 219,326.12
  4. Step 4: Simplify right side
    380,471.96x = 115,157,240,717.31
  5. Step 5: Solve for x
    x = 115,157,240,717.31/380,471.96
  6. Step 6: Final answer
    x = 302,669.45

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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.