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Finding the Fourth Proportional to 579,503.40, 868,563.90 and 242,543.40

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Solution

The fourth proportional to 579,503.40, 868,563.90 and 242,543.40 is: 363,525.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,503.40 : 868,563.90 = 242,543.40 : x
  2. Step 2: Convert to fraction form
    579,503.40/868,563.90 = 242,543.40/x
  3. Step 3: Cross multiply
    579,503.40x = 868,563.90 × 242,543.40
  4. Step 4: Simplify right side
    579,503.40x = 210,664,441,423.26
  5. Step 5: Solve for x
    x = 210,664,441,423.26/579,503.40
  6. Step 6: Final answer
    x = 363,525.81

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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.