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Finding the Fourth Proportional to 458,969.76, 686,980.44 and 245,203.20

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Solution

The fourth proportional to 458,969.76, 686,980.44 and 245,203.20 is: 367,017.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    458,969.76 : 686,980.44 = 245,203.20 : x
  2. Step 2: Convert to fraction form
    458,969.76/686,980.44 = 245,203.20/x
  3. Step 3: Cross multiply
    458,969.76x = 686,980.44 × 245,203.20
  4. Step 4: Simplify right side
    458,969.76x = 168,449,802,225.41
  5. Step 5: Solve for x
    x = 168,449,802,225.41/458,969.76
  6. Step 6: Final answer
    x = 367,017.21

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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.