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Finding the Fourth Proportional to 328,499.40, 492,749.10 and 297,006.60

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Solution

The fourth proportional to 328,499.40, 492,749.10 and 297,006.60 is: 445,509.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,499.40 : 492,749.10 = 297,006.60 : x
  2. Step 2: Convert to fraction form
    328,499.40/492,749.10 = 297,006.60/x
  3. Step 3: Cross multiply
    328,499.40x = 492,749.10 × 297,006.60
  4. Step 4: Simplify right side
    328,499.40x = 146,349,734,844.06
  5. Step 5: Solve for x
    x = 146,349,734,844.06/328,499.40
  6. Step 6: Final answer
    x = 445,509.90

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Similar ratio
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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.