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Finding the Fourth Proportional to 292,512.60, 438,653.70 and 105,427.80

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Solution

The fourth proportional to 292,512.60, 438,653.70 and 105,427.80 is: 158,100.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,512.60 : 438,653.70 = 105,427.80 : x
  2. Step 2: Convert to fraction form
    292,512.60/438,653.70 = 105,427.80/x
  3. Step 3: Cross multiply
    292,512.60x = 438,653.70 × 105,427.80
  4. Step 4: Simplify right side
    292,512.60x = 46,246,294,552.86
  5. Step 5: Solve for x
    x = 46,246,294,552.86/292,512.60
  6. Step 6: Final answer
    x = 158,100.18

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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.