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Finding the Fourth Proportional to 438,680.48, 605,275.31 and 254,809.79

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Solution

The fourth proportional to 438,680.48, 605,275.31 and 254,809.79 is: 351,577.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,680.48 : 605,275.31 = 254,809.79 : x
  2. Step 2: Convert to fraction form
    438,680.48/605,275.31 = 254,809.79/x
  3. Step 3: Cross multiply
    438,680.48x = 605,275.31 × 254,809.79
  4. Step 4: Simplify right side
    438,680.48x = 154,230,075,588.82
  5. Step 5: Solve for x
    x = 154,230,075,588.82/438,680.48
  6. Step 6: Final answer
    x = 351,577.25

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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.