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Finding the Fourth Proportional to 358,832.70, 538,252.91 and 153,639.71

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Solution

The fourth proportional to 358,832.70, 538,252.91 and 153,639.71 is: 230,461.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,832.70 : 538,252.91 = 153,639.71 : x
  2. Step 2: Convert to fraction form
    358,832.70/538,252.91 = 153,639.71/x
  3. Step 3: Cross multiply
    358,832.70x = 538,252.91 × 153,639.71
  4. Step 4: Simplify right side
    358,832.70x = 82,697,019,558.04
  5. Step 5: Solve for x
    x = 82,697,019,558.04/358,832.70
  6. Step 6: Final answer
    x = 230,461.21

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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.