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Finding the Fourth Proportional to 383,259.44, 528,897.93 and 211,179.80

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Solution

The fourth proportional to 383,259.44, 528,897.93 and 211,179.80 is: 291,428.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,259.44 : 528,897.93 = 211,179.80 : x
  2. Step 2: Convert to fraction form
    383,259.44/528,897.93 = 211,179.80/x
  3. Step 3: Cross multiply
    383,259.44x = 528,897.93 × 211,179.80
  4. Step 4: Simplify right side
    383,259.44x = 111,692,559,077.81
  5. Step 5: Solve for x
    x = 111,692,559,077.81/383,259.44
  6. Step 6: Final answer
    x = 291,428.07

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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.