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Finding the Fourth Proportional to 383,888.76, 529,762.80 and 211,808.12

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Solution

The fourth proportional to 383,888.76, 529,762.80 and 211,808.12 is: 292,293.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,888.76 : 529,762.80 = 211,808.12 : x
  2. Step 2: Convert to fraction form
    383,888.76/529,762.80 = 211,808.12/x
  3. Step 3: Cross multiply
    383,888.76x = 529,762.80 × 211,808.12
  4. Step 4: Simplify right side
    383,888.76x = 112,208,062,713.94
  5. Step 5: Solve for x
    x = 112,208,062,713.94/383,888.76
  6. Step 6: Final answer
    x = 292,293.17

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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.