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Finding the Fourth Proportional to 328,100.40, 492,150.60 and 286,628.40

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Solution

The fourth proportional to 328,100.40, 492,150.60 and 286,628.40 is: 429,942.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,100.40 : 492,150.60 = 286,628.40 : x
  2. Step 2: Convert to fraction form
    328,100.40/492,150.60 = 286,628.40/x
  3. Step 3: Cross multiply
    328,100.40x = 492,150.60 × 286,628.40
  4. Step 4: Simplify right side
    328,100.40x = 141,064,339,037.04
  5. Step 5: Solve for x
    x = 141,064,339,037.04/328,100.40
  6. Step 6: Final answer
    x = 429,942.60

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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.