Home / 394,547.40-591,821.10-145,326.60

Finding the Fourth Proportional to 394,547.40, 591,821.10 and 145,326.60

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Solution

The fourth proportional to 394,547.40, 591,821.10 and 145,326.60 is: 217,989.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,547.40 : 591,821.10 = 145,326.60 : x
  2. Step 2: Convert to fraction form
    394,547.40/591,821.10 = 145,326.60/x
  3. Step 3: Cross multiply
    394,547.40x = 591,821.10 × 145,326.60
  4. Step 4: Simplify right side
    394,547.40x = 86,007,348,271.26
  5. Step 5: Solve for x
    x = 86,007,348,271.26/394,547.40
  6. Step 6: Final answer
    x = 217,989.90

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Similar ratio
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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.