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Finding the Fourth Proportional to 355,521.02, 490,626.74 and 212,254.30

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Solution

The fourth proportional to 355,521.02, 490,626.74 and 212,254.30 is: 292,915.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,521.02 : 490,626.74 = 212,254.30 : x
  2. Step 2: Convert to fraction form
    355,521.02/490,626.74 = 212,254.30/x
  3. Step 3: Cross multiply
    355,521.02x = 490,626.74 × 212,254.30
  4. Step 4: Simplify right side
    355,521.02x = 104,137,635,259.98
  5. Step 5: Solve for x
    x = 104,137,635,259.98/355,521.02
  6. Step 6: Final answer
    x = 292,915.55

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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.