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Finding the Fourth Proportional to 438,323.60, 657,485.40 and 367,464.80

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Solution

The fourth proportional to 438,323.60, 657,485.40 and 367,464.80 is: 551,197.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,323.60 : 657,485.40 = 367,464.80 : x
  2. Step 2: Convert to fraction form
    438,323.60/657,485.40 = 367,464.80/x
  3. Step 3: Cross multiply
    438,323.60x = 657,485.40 × 367,464.80
  4. Step 4: Simplify right side
    438,323.60x = 241,602,741,013.92
  5. Step 5: Solve for x
    x = 241,602,741,013.92/438,323.60
  6. Step 6: Final answer
    x = 551,197.20

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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.