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Finding the Fourth Proportional to 380,873.48, 525,587.28 and 219,780.32

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Solution

The fourth proportional to 380,873.48, 525,587.28 and 219,780.32 is: 303,286.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,873.48 : 525,587.28 = 219,780.32 : x
  2. Step 2: Convert to fraction form
    380,873.48/525,587.28 = 219,780.32/x
  3. Step 3: Cross multiply
    380,873.48x = 525,587.28 × 219,780.32
  4. Step 4: Simplify right side
    380,873.48x = 115,513,740,586.33
  5. Step 5: Solve for x
    x = 115,513,740,586.33/380,873.48
  6. Step 6: Final answer
    x = 303,286.38

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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.