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Finding the Fourth Proportional to 292,100.40, 438,150.60 and 105,087.60

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Solution

The fourth proportional to 292,100.40, 438,150.60 and 105,087.60 is: 157,631.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,100.40 : 438,150.60 = 105,087.60 : x
  2. Step 2: Convert to fraction form
    292,100.40/438,150.60 = 105,087.60/x
  3. Step 3: Cross multiply
    292,100.40x = 438,150.60 × 105,087.60
  4. Step 4: Simplify right side
    292,100.40x = 46,044,194,992.56
  5. Step 5: Solve for x
    x = 46,044,194,992.56/292,100.40
  6. Step 6: Final answer
    x = 157,631.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.