Home / 311,412.28-429,748.94-168,172.32

Finding the Fourth Proportional to 311,412.28, 429,748.94 and 168,172.32

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Solution

The fourth proportional to 311,412.28, 429,748.94 and 168,172.32 is: 232,077.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,412.28 : 429,748.94 = 168,172.32 : x
  2. Step 2: Convert to fraction form
    311,412.28/429,748.94 = 168,172.32/x
  3. Step 3: Cross multiply
    311,412.28x = 429,748.94 × 168,172.32
  4. Step 4: Simplify right side
    311,412.28x = 72,271,876,257.34
  5. Step 5: Solve for x
    x = 72,271,876,257.34/311,412.28
  6. Step 6: Final answer
    x = 232,077.80

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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.