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Finding the Fourth Proportional to 573,190.16, 859,785.20 and 257,278

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Solution

The fourth proportional to 573,190.16, 859,785.20 and 257,278 is: 385,916.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    573,190.16 : 859,785.20 = 257,278 : x
  2. Step 2: Convert to fraction form
    573,190.16/859,785.20 = 257,278/x
  3. Step 3: Cross multiply
    573,190.16x = 859,785.20 × 257,278
  4. Step 4: Simplify right side
    573,190.16x = 221,203,816,685.60
  5. Step 5: Solve for x
    x = 221,203,816,685.60/573,190.16
  6. Step 6: Final answer
    x = 385,916.98

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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.