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Finding the Fourth Proportional to 253,438.35, 349,890.48 and 189,261.45

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Solution

The fourth proportional to 253,438.35, 349,890.48 and 189,261.45 is: 261,289.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,438.35 : 349,890.48 = 189,261.45 : x
  2. Step 2: Convert to fraction form
    253,438.35/349,890.48 = 189,261.45/x
  3. Step 3: Cross multiply
    253,438.35x = 349,890.48 × 189,261.45
  4. Step 4: Simplify right side
    253,438.35x = 66,220,779,586.00
  5. Step 5: Solve for x
    x = 66,220,779,586.00/253,438.35
  6. Step 6: Final answer
    x = 261,289.50

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1.5x scale

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.