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Finding the Fourth Proportional to 290,328.43, 435,323.14 and 112,627.79

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Solution

The fourth proportional to 290,328.43, 435,323.14 and 112,627.79 is: 168,875.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,328.43 : 435,323.14 = 112,627.79 : x
  2. Step 2: Convert to fraction form
    290,328.43/435,323.14 = 112,627.79/x
  3. Step 3: Cross multiply
    290,328.43x = 435,323.14 × 112,627.79
  4. Step 4: Simplify right side
    290,328.43x = 49,029,483,194.06
  5. Step 5: Solve for x
    x = 49,029,483,194.06/290,328.43
  6. Step 6: Final answer
    x = 168,875.93

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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.