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Finding the Fourth Proportional to 383,122.55, 528,702.63 and 211,056.59

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Solution

The fourth proportional to 383,122.55, 528,702.63 and 211,056.59 is: 291,254.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,122.55 : 528,702.63 = 211,056.59 : x
  2. Step 2: Convert to fraction form
    383,122.55/528,702.63 = 211,056.59/x
  3. Step 3: Cross multiply
    383,122.55x = 528,702.63 × 211,056.59
  4. Step 4: Simplify right side
    383,122.55x = 111,586,174,211.83
  5. Step 5: Solve for x
    x = 111,586,174,211.83/383,122.55
  6. Step 6: Final answer
    x = 291,254.52

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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.