Home / 218,915.64-302,099.76-123,422.40

Finding the Fourth Proportional to 218,915.64, 302,099.76 and 123,422.40

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Solution

The fourth proportional to 218,915.64, 302,099.76 and 123,422.40 is: 170,320.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,915.64 : 302,099.76 = 123,422.40 : x
  2. Step 2: Convert to fraction form
    218,915.64/302,099.76 = 123,422.40/x
  3. Step 3: Cross multiply
    218,915.64x = 302,099.76 × 123,422.40
  4. Step 4: Simplify right side
    218,915.64x = 37,285,877,418.62
  5. Step 5: Solve for x
    x = 37,285,877,418.62/218,915.64
  6. Step 6: Final answer
    x = 170,320.76

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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.