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Finding the Fourth Proportional to 358,903.80, 538,355.70 and 325,688.74

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Solution

The fourth proportional to 358,903.80, 538,355.70 and 325,688.74 is: 488,533.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,903.80 : 538,355.70 = 325,688.74 : x
  2. Step 2: Convert to fraction form
    358,903.80/538,355.70 = 325,688.74/x
  3. Step 3: Cross multiply
    358,903.80x = 538,355.70 × 325,688.74
  4. Step 4: Simplify right side
    358,903.80x = 175,336,388,258.93
  5. Step 5: Solve for x
    x = 175,336,388,258.93/358,903.80
  6. Step 6: Final answer
    x = 488,533.11

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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.