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Finding the Fourth Proportional to 307,637.20, 461,455.80 and 245,429.20

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Solution

The fourth proportional to 307,637.20, 461,455.80 and 245,429.20 is: 368,143.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,637.20 : 461,455.80 = 245,429.20 : x
  2. Step 2: Convert to fraction form
    307,637.20/461,455.80 = 245,429.20/x
  3. Step 3: Cross multiply
    307,637.20x = 461,455.80 × 245,429.20
  4. Step 4: Simplify right side
    307,637.20x = 113,254,727,829.36
  5. Step 5: Solve for x
    x = 113,254,727,829.36/307,637.20
  6. Step 6: Final answer
    x = 368,143.80

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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.