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Finding the Fourth Proportional to 438,654.77, 658,225.46 and 214,017.07

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Solution

The fourth proportional to 438,654.77, 658,225.46 and 214,017.07 is: 321,144.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,654.77 : 658,225.46 = 214,017.07 : x
  2. Step 2: Convert to fraction form
    438,654.77/658,225.46 = 214,017.07/x
  3. Step 3: Cross multiply
    438,654.77x = 658,225.46 × 214,017.07
  4. Step 4: Simplify right side
    438,654.77x = 140,871,483,268.41
  5. Step 5: Solve for x
    x = 140,871,483,268.41/438,654.77
  6. Step 6: Final answer
    x = 321,144.31

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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.