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Finding the Fourth Proportional to 415,955.70, 624,191.85 and 266,303.39

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Solution

The fourth proportional to 415,955.70, 624,191.85 and 266,303.39 is: 399,620.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    415,955.70 : 624,191.85 = 266,303.39 : x
  2. Step 2: Convert to fraction form
    415,955.70/624,191.85 = 266,303.39/x
  3. Step 3: Cross multiply
    415,955.70x = 624,191.85 × 266,303.39
  4. Step 4: Simplify right side
    415,955.70x = 166,224,408,224.49
  5. Step 5: Solve for x
    x = 166,224,408,224.49/415,955.70
  6. Step 6: Final answer
    x = 399,620.46

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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.