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Finding the Fourth Proportional to 553,050.60, 763,232.94 and 311,333.64

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Solution

The fourth proportional to 553,050.60, 763,232.94 and 311,333.64 is: 429,653.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,050.60 : 763,232.94 = 311,333.64 : x
  2. Step 2: Convert to fraction form
    553,050.60/763,232.94 = 311,333.64/x
  3. Step 3: Cross multiply
    553,050.60x = 763,232.94 × 311,333.64
  4. Step 4: Simplify right side
    553,050.60x = 237,620,089,378.10
  5. Step 5: Solve for x
    x = 237,620,089,378.10/553,050.60
  6. Step 6: Final answer
    x = 429,653.43

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.