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Finding the Fourth Proportional to 310,401.41, 428,365.23 and 174,438.05

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Solution

The fourth proportional to 310,401.41, 428,365.23 and 174,438.05 is: 240,730.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,401.41 : 428,365.23 = 174,438.05 : x
  2. Step 2: Convert to fraction form
    310,401.41/428,365.23 = 174,438.05/x
  3. Step 3: Cross multiply
    310,401.41x = 428,365.23 × 174,438.05
  4. Step 4: Simplify right side
    310,401.41x = 74,723,195,607.72
  5. Step 5: Solve for x
    x = 74,723,195,607.72/310,401.41
  6. Step 6: Final answer
    x = 240,730.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.