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Finding the Fourth Proportional to 328,239, 492,358.65 and 103,622.22

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Solution

The fourth proportional to 328,239, 492,358.65 and 103,622.22 is: 155,433.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,239 : 492,358.65 = 103,622.22 : x
  2. Step 2: Convert to fraction form
    328,239/492,358.65 = 103,622.22/x
  3. Step 3: Cross multiply
    328,239x = 492,358.65 × 103,622.22
  4. Step 4: Simplify right side
    328,239x = 51,019,296,349.20
  5. Step 5: Solve for x
    x = 51,019,296,349.20/328,239
  6. Step 6: Final answer
    x = 155,433.38

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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.