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Finding the Fourth Proportional to 393,246, 589,871.16 and 97,758

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Solution

The fourth proportional to 393,246, 589,871.16 and 97,758 is: 146,637.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,246 : 589,871.16 = 97,758 : x
  2. Step 2: Convert to fraction form
    393,246/589,871.16 = 97,758/x
  3. Step 3: Cross multiply
    393,246x = 589,871.16 × 97,758
  4. Step 4: Simplify right side
    393,246x = 57,664,624,859.28
  5. Step 5: Solve for x
    x = 57,664,624,859.28/393,246
  6. Step 6: Final answer
    x = 146,637.54

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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.