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Finding the Fourth Proportional to 515,059.40, 772,751.10 and 248,828.60

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Solution

The fourth proportional to 515,059.40, 772,751.10 and 248,828.60 is: 373,321.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,059.40 : 772,751.10 = 248,828.60 : x
  2. Step 2: Convert to fraction form
    515,059.40/772,751.10 = 248,828.60/x
  3. Step 3: Cross multiply
    515,059.40x = 772,751.10 × 248,828.60
  4. Step 4: Simplify right side
    515,059.40x = 192,282,574,361.46
  5. Step 5: Solve for x
    x = 192,282,574,361.46/515,059.40
  6. Step 6: Final answer
    x = 373,321.16

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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.