Home / 438,719.58-605,377.39-257,365.34

Finding the Fourth Proportional to 438,719.58, 605,377.39 and 257,365.34

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Solution

The fourth proportional to 438,719.58, 605,377.39 and 257,365.34 is: 355,131.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,719.58 : 605,377.39 = 257,365.34 : x
  2. Step 2: Convert to fraction form
    438,719.58/605,377.39 = 257,365.34/x
  3. Step 3: Cross multiply
    438,719.58x = 605,377.39 × 257,365.34
  4. Step 4: Simplify right side
    438,719.58x = 155,803,158,657.28
  5. Step 5: Solve for x
    x = 155,803,158,657.28/438,719.58
  6. Step 6: Final answer
    x = 355,131.53

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1.5x scale

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.