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Finding the Fourth Proportional to 290,308.08, 435,258 and 112,665.36

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Solution

The fourth proportional to 290,308.08, 435,258 and 112,665.36 is: 168,918.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,308.08 : 435,258 = 112,665.36 : x
  2. Step 2: Convert to fraction form
    290,308.08/435,258 = 112,665.36/x
  3. Step 3: Cross multiply
    290,308.08x = 435,258 × 112,665.36
  4. Step 4: Simplify right side
    290,308.08x = 49,038,499,262.88
  5. Step 5: Solve for x
    x = 49,038,499,262.88/290,308.08
  6. Step 6: Final answer
    x = 168,918.82

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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.