Home / 317,976.60-438,712.02-190,605.72

Finding the Fourth Proportional to 317,976.60, 438,712.02 and 190,605.72

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Solution

The fourth proportional to 317,976.60, 438,712.02 and 190,605.72 is: 262,978.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,976.60 : 438,712.02 = 190,605.72 : x
  2. Step 2: Convert to fraction form
    317,976.60/438,712.02 = 190,605.72/x
  3. Step 3: Cross multiply
    317,976.60x = 438,712.02 × 190,605.72
  4. Step 4: Simplify right side
    317,976.60x = 83,621,020,444.75
  5. Step 5: Solve for x
    x = 83,621,020,444.75/317,976.60
  6. Step 6: Final answer
    x = 262,978.54

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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.