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Finding the Fourth Proportional to 358,429.70, 494,629.07 and 197,281.28

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Solution

The fourth proportional to 358,429.70, 494,629.07 and 197,281.28 is: 272,246.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,429.70 : 494,629.07 = 197,281.28 : x
  2. Step 2: Convert to fraction form
    358,429.70/494,629.07 = 197,281.28/x
  3. Step 3: Cross multiply
    358,429.70x = 494,629.07 × 197,281.28
  4. Step 4: Simplify right side
    358,429.70x = 97,581,056,054.81
  5. Step 5: Solve for x
    x = 97,581,056,054.81/358,429.70
  6. Step 6: Final answer
    x = 272,246.01

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.