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Finding the Fourth Proportional to 358,998.40, 538,497.60 and 324,006.40

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Solution

The fourth proportional to 358,998.40, 538,497.60 and 324,006.40 is: 486,009.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,998.40 : 538,497.60 = 324,006.40 : x
  2. Step 2: Convert to fraction form
    358,998.40/538,497.60 = 324,006.40/x
  3. Step 3: Cross multiply
    358,998.40x = 538,497.60 × 324,006.40
  4. Step 4: Simplify right side
    358,998.40x = 174,476,668,784.64
  5. Step 5: Solve for x
    x = 174,476,668,784.64/358,998.40
  6. Step 6: Final answer
    x = 486,009.60

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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.