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Finding the Fourth Proportional to 335,474.40, 503,211.60 and 272,488.80

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Solution

The fourth proportional to 335,474.40, 503,211.60 and 272,488.80 is: 408,733.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    335,474.40 : 503,211.60 = 272,488.80 : x
  2. Step 2: Convert to fraction form
    335,474.40/503,211.60 = 272,488.80/x
  3. Step 3: Cross multiply
    335,474.40x = 503,211.60 × 272,488.80
  4. Step 4: Simplify right side
    335,474.40x = 137,119,525,030.08
  5. Step 5: Solve for x
    x = 137,119,525,030.08/335,474.40
  6. Step 6: Final answer
    x = 408,733.20

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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.