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Finding the Fourth Proportional to 348,026.70, 521,262.45 and 285,818.70

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Solution

The fourth proportional to 348,026.70, 521,262.45 and 285,818.70 is: 428,089.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    348,026.70 : 521,262.45 = 285,818.70 : x
  2. Step 2: Convert to fraction form
    348,026.70/521,262.45 = 285,818.70/x
  3. Step 3: Cross multiply
    348,026.70x = 521,262.45 × 285,818.70
  4. Step 4: Simplify right side
    348,026.70x = 148,986,555,817.82
  5. Step 5: Solve for x
    x = 148,986,555,817.82/348,026.70
  6. Step 6: Final answer
    x = 428,089.44

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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.