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Finding the Fourth Proportional to 354,240.69, 529,103.39 and 320,454.73

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Solution

The fourth proportional to 354,240.69, 529,103.39 and 320,454.73 is: 478,639.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,240.69 : 529,103.39 = 320,454.73 : x
  2. Step 2: Convert to fraction form
    354,240.69/529,103.39 = 320,454.73/x
  3. Step 3: Cross multiply
    354,240.69x = 529,103.39 × 320,454.73
  4. Step 4: Simplify right side
    354,240.69x = 169,553,683,984.54
  5. Step 5: Solve for x
    x = 169,553,683,984.54/354,240.69
  6. Step 6: Final answer
    x = 478,639.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.