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Finding the Fourth Proportional to 450,418.22, 621,802.18 and 259,394.72

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Solution

The fourth proportional to 450,418.22, 621,802.18 and 259,394.72 is: 358,094.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    450,418.22 : 621,802.18 = 259,394.72 : x
  2. Step 2: Convert to fraction form
    450,418.22/621,802.18 = 259,394.72/x
  3. Step 3: Cross multiply
    450,418.22x = 621,802.18 × 259,394.72
  4. Step 4: Simplify right side
    450,418.22x = 161,292,202,376.49
  5. Step 5: Solve for x
    x = 161,292,202,376.49/450,418.22
  6. Step 6: Final answer
    x = 358,094.31

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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.