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Finding the Fourth Proportional to 310,338.72, 428,267.94 and 176,202.72

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Solution

The fourth proportional to 310,338.72, 428,267.94 and 176,202.72 is: 243,160.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,338.72 : 428,267.94 = 176,202.72 : x
  2. Step 2: Convert to fraction form
    310,338.72/428,267.94 = 176,202.72/x
  3. Step 3: Cross multiply
    310,338.72x = 428,267.94 × 176,202.72
  4. Step 4: Simplify right side
    310,338.72x = 75,461,975,916.80
  5. Step 5: Solve for x
    x = 75,461,975,916.80/310,338.72
  6. Step 6: Final answer
    x = 243,160.04

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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.