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Finding the Fourth Proportional to 351,366.80, 525,821.40 and 321,875.60

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Solution

The fourth proportional to 351,366.80, 525,821.40 and 321,875.60 is: 481,687.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,366.80 : 525,821.40 = 321,875.60 : x
  2. Step 2: Convert to fraction form
    351,366.80/525,821.40 = 321,875.60/x
  3. Step 3: Cross multiply
    351,366.80x = 525,821.40 × 321,875.60
  4. Step 4: Simplify right side
    351,366.80x = 169,249,078,617.84
  5. Step 5: Solve for x
    x = 169,249,078,617.84/351,366.80
  6. Step 6: Final answer
    x = 481,687.74

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.