Home / 438,370.40-657,361.20-201,785.60

Finding the Fourth Proportional to 438,370.40, 657,361.20 and 201,785.60

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Solution

The fourth proportional to 438,370.40, 657,361.20 and 201,785.60 is: 302,588.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,370.40 : 657,361.20 = 201,785.60 : x
  2. Step 2: Convert to fraction form
    438,370.40/657,361.20 = 201,785.60/x
  3. Step 3: Cross multiply
    438,370.40x = 657,361.20 × 201,785.60
  4. Step 4: Simplify right side
    438,370.40x = 132,646,024,158.72
  5. Step 5: Solve for x
    x = 132,646,024,158.72/438,370.40
  6. Step 6: Final answer
    x = 302,588.92

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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.