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Finding the Fourth Proportional to 382,143.80, 573,215.70 and 376,238.90

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Solution

The fourth proportional to 382,143.80, 573,215.70 and 376,238.90 is: 564,358.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    382,143.80 : 573,215.70 = 376,238.90 : x
  2. Step 2: Convert to fraction form
    382,143.80/573,215.70 = 376,238.90/x
  3. Step 3: Cross multiply
    382,143.80x = 573,215.70 × 376,238.90
  4. Step 4: Simplify right side
    382,143.80x = 215,666,044,430.73
  5. Step 5: Solve for x
    x = 215,666,044,430.73/382,143.80
  6. Step 6: Final answer
    x = 564,358.35

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1.5x scale

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.