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Finding the Fourth Proportional to 354,542.49, 489,271.76 and 193,398.26

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Solution

The fourth proportional to 354,542.49, 489,271.76 and 193,398.26 is: 266,891.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,542.49 : 489,271.76 = 193,398.26 : x
  2. Step 2: Convert to fraction form
    354,542.49/489,271.76 = 193,398.26/x
  3. Step 3: Cross multiply
    354,542.49x = 489,271.76 × 193,398.26
  4. Step 4: Simplify right side
    354,542.49x = 94,624,303,637.79
  5. Step 5: Solve for x
    x = 94,624,303,637.79/354,542.49
  6. Step 6: Final answer
    x = 266,891.29

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1.5x scale

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.