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Finding the Fourth Proportional to 328,157.58, 492,236.01 and 128,337.54

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Solution

The fourth proportional to 328,157.58, 492,236.01 and 128,337.54 is: 192,506.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,157.58 : 492,236.01 = 128,337.54 : x
  2. Step 2: Convert to fraction form
    328,157.58/492,236.01 = 128,337.54/x
  3. Step 3: Cross multiply
    328,157.58x = 492,236.01 × 128,337.54
  4. Step 4: Simplify right side
    328,157.58x = 63,172,358,622.82
  5. Step 5: Solve for x
    x = 63,172,358,622.82/328,157.58
  6. Step 6: Final answer
    x = 192,506.17

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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.