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Finding the Fourth Proportional to 573,021.30, 858,904.20 and 288,257.70

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Solution

The fourth proportional to 573,021.30, 858,904.20 and 288,257.70 is: 432,070.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    573,021.30 : 858,904.20 = 288,257.70 : x
  2. Step 2: Convert to fraction form
    573,021.30/858,904.20 = 288,257.70/x
  3. Step 3: Cross multiply
    573,021.30x = 858,904.20 × 288,257.70
  4. Step 4: Simplify right side
    573,021.30x = 247,585,749,212.34
  5. Step 5: Solve for x
    x = 247,585,749,212.34/573,021.30
  6. Step 6: Final answer
    x = 432,070.76

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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.