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Finding the Fourth Proportional to 328,311.01, 492,440.59 and 103,678.17

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Solution

The fourth proportional to 328,311.01, 492,440.59 and 103,678.17 is: 155,509.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,311.01 : 492,440.59 = 103,678.17 : x
  2. Step 2: Convert to fraction form
    328,311.01/492,440.59 = 103,678.17/x
  3. Step 3: Cross multiply
    328,311.01x = 492,440.59 × 103,678.17
  4. Step 4: Simplify right side
    328,311.01x = 51,055,339,204.92
  5. Step 5: Solve for x
    x = 51,055,339,204.92/328,311.01
  6. Step 6: Final answer
    x = 155,509.07

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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.