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Finding the Fourth Proportional to 613,637.38, 920,434.20 and 214,276.60

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Solution

The fourth proportional to 613,637.38, 920,434.20 and 214,276.60 is: 321,407.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,637.38 : 920,434.20 = 214,276.60 : x
  2. Step 2: Convert to fraction form
    613,637.38/920,434.20 = 214,276.60/x
  3. Step 3: Cross multiply
    613,637.38x = 920,434.20 × 214,276.60
  4. Step 4: Simplify right side
    613,637.38x = 197,227,510,899.72
  5. Step 5: Solve for x
    x = 197,227,510,899.72/613,637.38
  6. Step 6: Final answer
    x = 321,407.26

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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.