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Finding the Fourth Proportional to 354,596.76, 489,256.11 and 216,740.43

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Solution

The fourth proportional to 354,596.76, 489,256.11 and 216,740.43 is: 299,048.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,596.76 : 489,256.11 = 216,740.43 : x
  2. Step 2: Convert to fraction form
    354,596.76/489,256.11 = 216,740.43/x
  3. Step 3: Cross multiply
    354,596.76x = 489,256.11 × 216,740.43
  4. Step 4: Simplify right side
    354,596.76x = 106,041,579,661.53
  5. Step 5: Solve for x
    x = 106,041,579,661.53/354,596.76
  6. Step 6: Final answer
    x = 299,048.36

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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.