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Finding the Fourth Proportional to 573,206.40, 860,149.80 and 218,256.30

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Solution

The fourth proportional to 573,206.40, 860,149.80 and 218,256.30 is: 327,513.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    573,206.40 : 860,149.80 = 218,256.30 : x
  2. Step 2: Convert to fraction form
    573,206.40/860,149.80 = 218,256.30/x
  3. Step 3: Cross multiply
    573,206.40x = 860,149.80 × 218,256.30
  4. Step 4: Simplify right side
    573,206.40x = 187,733,112,793.74
  5. Step 5: Solve for x
    x = 187,733,112,793.74/573,206.40
  6. Step 6: Final answer
    x = 327,513.99

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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.