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Finding the Fourth Proportional to 318,349.67, 477,423 and 105,077.97

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Solution

The fourth proportional to 318,349.67, 477,423 and 105,077.97 is: 157,583.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,349.67 : 477,423 = 105,077.97 : x
  2. Step 2: Convert to fraction form
    318,349.67/477,423 = 105,077.97/x
  3. Step 3: Cross multiply
    318,349.67x = 477,423 × 105,077.97
  4. Step 4: Simplify right side
    318,349.67x = 50,166,639,671.31
  5. Step 5: Solve for x
    x = 50,166,639,671.31/318,349.67
  6. Step 6: Final answer
    x = 157,583.45

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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.