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Finding the Fourth Proportional to 245,881.80, 368,822.70 and 171,086.40

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Solution

The fourth proportional to 245,881.80, 368,822.70 and 171,086.40 is: 256,629.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,881.80 : 368,822.70 = 171,086.40 : x
  2. Step 2: Convert to fraction form
    245,881.80/368,822.70 = 171,086.40/x
  3. Step 3: Cross multiply
    245,881.80x = 368,822.70 × 171,086.40
  4. Step 4: Simplify right side
    245,881.80x = 63,100,547,981.28
  5. Step 5: Solve for x
    x = 63,100,547,981.28/245,881.80
  6. Step 6: Final answer
    x = 256,629.60

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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.