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Finding the Fourth Proportional to 356,407.16, 534,450.96 and 212,380.91

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Solution

The fourth proportional to 356,407.16, 534,450.96 and 212,380.91 is: 318,476.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,407.16 : 534,450.96 = 212,380.91 : x
  2. Step 2: Convert to fraction form
    356,407.16/534,450.96 = 212,380.91/x
  3. Step 3: Cross multiply
    356,407.16x = 534,450.96 × 212,380.91
  4. Step 4: Simplify right side
    356,407.16x = 113,507,182,070.25
  5. Step 5: Solve for x
    x = 113,507,182,070.25/356,407.16
  6. Step 6: Final answer
    x = 318,476.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.