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Finding the Fourth Proportional to 503,786.40, 755,503.20 and 148,706.40

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Solution

The fourth proportional to 503,786.40, 755,503.20 and 148,706.40 is: 223,007.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    503,786.40 : 755,503.20 = 148,706.40 : x
  2. Step 2: Convert to fraction form
    503,786.40/755,503.20 = 148,706.40/x
  3. Step 3: Cross multiply
    503,786.40x = 755,503.20 × 148,706.40
  4. Step 4: Simplify right side
    503,786.40x = 112,348,161,060.48
  5. Step 5: Solve for x
    x = 112,348,161,060.48/503,786.40
  6. Step 6: Final answer
    x = 223,007.53

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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.