Home / 438,131.40-657,197.10-288,540.60

Finding the Fourth Proportional to 438,131.40, 657,197.10 and 288,540.60

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Solution

The fourth proportional to 438,131.40, 657,197.10 and 288,540.60 is: 432,810.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,131.40 : 657,197.10 = 288,540.60 : x
  2. Step 2: Convert to fraction form
    438,131.40/657,197.10 = 288,540.60/x
  3. Step 3: Cross multiply
    438,131.40x = 657,197.10 × 288,540.60
  4. Step 4: Simplify right side
    438,131.40x = 189,628,045,552.26
  5. Step 5: Solve for x
    x = 189,628,045,552.26/438,131.40
  6. Step 6: Final answer
    x = 432,810.90

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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.