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Finding the Fourth Proportional to 387,593.60, 581,390.40 and 364,246.40

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Solution

The fourth proportional to 387,593.60, 581,390.40 and 364,246.40 is: 546,369.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,593.60 : 581,390.40 = 364,246.40 : x
  2. Step 2: Convert to fraction form
    387,593.60/581,390.40 = 364,246.40/x
  3. Step 3: Cross multiply
    387,593.60x = 581,390.40 × 364,246.40
  4. Step 4: Simplify right side
    387,593.60x = 211,769,360,194.56
  5. Step 5: Solve for x
    x = 211,769,360,194.56/387,593.60
  6. Step 6: Final answer
    x = 546,369.60

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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.