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Finding the Fourth Proportional to 354,657.42, 489,500.08 and 216,859.91

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Solution

The fourth proportional to 354,657.42, 489,500.08 and 216,859.91 is: 299,311.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,657.42 : 489,500.08 = 216,859.91 : x
  2. Step 2: Convert to fraction form
    354,657.42/489,500.08 = 216,859.91/x
  3. Step 3: Cross multiply
    354,657.42x = 489,500.08 × 216,859.91
  4. Step 4: Simplify right side
    354,657.42x = 106,152,940,304.14
  5. Step 5: Solve for x
    x = 106,152,940,304.14/354,657.42
  6. Step 6: Final answer
    x = 299,311.21

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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.