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Finding the Fourth Proportional to 351,765, 485,434.47 and 190,624

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Solution

The fourth proportional to 351,765, 485,434.47 and 190,624 is: 263,060.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,765 : 485,434.47 = 190,624 : x
  2. Step 2: Convert to fraction form
    351,765/485,434.47 = 190,624/x
  3. Step 3: Cross multiply
    351,765x = 485,434.47 × 190,624
  4. Step 4: Simplify right side
    351,765x = 92,535,460,409.28
  5. Step 5: Solve for x
    x = 92,535,460,409.28/351,765
  6. Step 6: Final answer
    x = 263,060.45

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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.