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Finding the Fourth Proportional to 450,646.67, 621,960.71 and 257,053.43

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Solution

The fourth proportional to 450,646.67, 621,960.71 and 257,053.43 is: 354,772.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    450,646.67 : 621,960.71 = 257,053.43 : x
  2. Step 2: Convert to fraction form
    450,646.67/621,960.71 = 257,053.43/x
  3. Step 3: Cross multiply
    450,646.67x = 621,960.71 × 257,053.43
  4. Step 4: Simplify right side
    450,646.67x = 159,877,129,435.67
  5. Step 5: Solve for x
    x = 159,877,129,435.67/450,646.67
  6. Step 6: Final answer
    x = 354,772.69

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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.