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Finding the Fourth Proportional to 236,292.84, 326,085.75 and 128,862

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Solution

The fourth proportional to 236,292.84, 326,085.75 and 128,862 is: 177,830.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    236,292.84 : 326,085.75 = 128,862 : x
  2. Step 2: Convert to fraction form
    236,292.84/326,085.75 = 128,862/x
  3. Step 3: Cross multiply
    236,292.84x = 326,085.75 × 128,862
  4. Step 4: Simplify right side
    236,292.84x = 42,020,061,916.50
  5. Step 5: Solve for x
    x = 42,020,061,916.50/236,292.84
  6. Step 6: Final answer
    x = 177,830.45

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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.