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Finding the Fourth Proportional to 380,554.60, 570,419.88 and 247,529.92

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Solution

The fourth proportional to 380,554.60, 570,419.88 and 247,529.92 is: 371,026.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,554.60 : 570,419.88 = 247,529.92 : x
  2. Step 2: Convert to fraction form
    380,554.60/570,419.88 = 247,529.92/x
  3. Step 3: Cross multiply
    380,554.60x = 570,419.88 × 247,529.92
  4. Step 4: Simplify right side
    380,554.60x = 141,195,987,262.81
  5. Step 5: Solve for x
    x = 141,195,987,262.81/380,554.60
  6. Step 6: Final answer
    x = 371,026.88

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.