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Finding the Fourth Proportional to 292,080.80, 438,121.20 and 105,024.80

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Solution

The fourth proportional to 292,080.80, 438,121.20 and 105,024.80 is: 157,537.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,080.80 : 438,121.20 = 105,024.80 : x
  2. Step 2: Convert to fraction form
    292,080.80/438,121.20 = 105,024.80/x
  3. Step 3: Cross multiply
    292,080.80x = 438,121.20 × 105,024.80
  4. Step 4: Simplify right side
    292,080.80x = 46,013,591,405.76
  5. Step 5: Solve for x
    x = 46,013,591,405.76/292,080.80
  6. Step 6: Final answer
    x = 157,537.20

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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.