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Finding the Fourth Proportional to 307,918.40, 461,877.60 and 201,630.20

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Solution

The fourth proportional to 307,918.40, 461,877.60 and 201,630.20 is: 302,445.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,918.40 : 461,877.60 = 201,630.20 : x
  2. Step 2: Convert to fraction form
    307,918.40/461,877.60 = 201,630.20/x
  3. Step 3: Cross multiply
    307,918.40x = 461,877.60 × 201,630.20
  4. Step 4: Simplify right side
    307,918.40x = 93,128,472,863.52
  5. Step 5: Solve for x
    x = 93,128,472,863.52/307,918.40
  6. Step 6: Final answer
    x = 302,445.30

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1.5x scale

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.