Home / 290,359.16-400,685.28-163,040.12

Finding the Fourth Proportional to 290,359.16, 400,685.28 and 163,040.12

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Solution

The fourth proportional to 290,359.16, 400,685.28 and 163,040.12 is: 224,989.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,359.16 : 400,685.28 = 163,040.12 : x
  2. Step 2: Convert to fraction form
    290,359.16/400,685.28 = 163,040.12/x
  3. Step 3: Cross multiply
    290,359.16x = 400,685.28 × 163,040.12
  4. Step 4: Simplify right side
    290,359.16x = 65,327,776,133.43
  5. Step 5: Solve for x
    x = 65,327,776,133.43/290,359.16
  6. Step 6: Final answer
    x = 224,989.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.