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Finding the Fourth Proportional to 545,423.40, 818,134.07 and 245,553.57

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Solution

The fourth proportional to 545,423.40, 818,134.07 and 245,553.57 is: 368,329.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,423.40 : 818,134.07 = 245,553.57 : x
  2. Step 2: Convert to fraction form
    545,423.40/818,134.07 = 245,553.57/x
  3. Step 3: Cross multiply
    545,423.40x = 818,134.07 × 245,553.57
  4. Step 4: Simplify right side
    545,423.40x = 200,895,740,399.36
  5. Step 5: Solve for x
    x = 200,895,740,399.36/545,423.40
  6. Step 6: Final answer
    x = 368,329.89

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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.