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Finding the Fourth Proportional to 400,935.60, 601,403.40 and 248,720.40

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Solution

The fourth proportional to 400,935.60, 601,403.40 and 248,720.40 is: 373,080.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,935.60 : 601,403.40 = 248,720.40 : x
  2. Step 2: Convert to fraction form
    400,935.60/601,403.40 = 248,720.40/x
  3. Step 3: Cross multiply
    400,935.60x = 601,403.40 × 248,720.40
  4. Step 4: Simplify right side
    400,935.60x = 149,581,294,209.36
  5. Step 5: Solve for x
    x = 149,581,294,209.36/400,935.60
  6. Step 6: Final answer
    x = 373,080.60

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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.