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Finding the Fourth Proportional to 373,462.80, 515,330.01 and 212,314.38

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Solution

The fourth proportional to 373,462.80, 515,330.01 and 212,314.38 is: 292,966.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    373,462.80 : 515,330.01 = 212,314.38 : x
  2. Step 2: Convert to fraction form
    373,462.80/515,330.01 = 212,314.38/x
  3. Step 3: Cross multiply
    373,462.80x = 515,330.01 × 212,314.38
  4. Step 4: Simplify right side
    373,462.80x = 109,411,971,568.54
  5. Step 5: Solve for x
    x = 109,411,971,568.54/373,462.80
  6. Step 6: Final answer
    x = 292,966.18

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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.