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Finding the Fourth Proportional to 313,915.07, 470,862.18 and 136,422.26

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Solution

The fourth proportional to 313,915.07, 470,862.18 and 136,422.26 is: 204,628.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,915.07 : 470,862.18 = 136,422.26 : x
  2. Step 2: Convert to fraction form
    313,915.07/470,862.18 = 136,422.26/x
  3. Step 3: Cross multiply
    313,915.07x = 470,862.18 × 136,422.26
  4. Step 4: Simplify right side
    313,915.07x = 64,236,080,389.82
  5. Step 5: Solve for x
    x = 64,236,080,389.82/313,915.07
  6. Step 6: Final answer
    x = 204,628.86

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1.5x scale

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.