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Finding the Fourth Proportional to 450,641.67, 621,953.81 and 257,048.43

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Solution

The fourth proportional to 450,641.67, 621,953.81 and 257,048.43 is: 354,765.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    450,641.67 : 621,953.81 = 257,048.43 : x
  2. Step 2: Convert to fraction form
    450,641.67/621,953.81 = 257,048.43/x
  3. Step 3: Cross multiply
    450,641.67x = 621,953.81 × 257,048.43
  4. Step 4: Simplify right side
    450,641.67x = 159,872,250,393.02
  5. Step 5: Solve for x
    x = 159,872,250,393.02/450,641.67
  6. Step 6: Final answer
    x = 354,765.80

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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.