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Finding the Fourth Proportional to 438,809.60, 658,214.40 and 367,950.80

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Solution

The fourth proportional to 438,809.60, 658,214.40 and 367,950.80 is: 551,926.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,809.60 : 658,214.40 = 367,950.80 : x
  2. Step 2: Convert to fraction form
    438,809.60/658,214.40 = 367,950.80/x
  3. Step 3: Cross multiply
    438,809.60x = 658,214.40 × 367,950.80
  4. Step 4: Simplify right side
    438,809.60x = 242,190,515,051.52
  5. Step 5: Solve for x
    x = 242,190,515,051.52/438,809.60
  6. Step 6: Final answer
    x = 551,926.20

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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.