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Finding the Fourth Proportional to 313,956.40, 470,934.60 and 126,871.60

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Solution

The fourth proportional to 313,956.40, 470,934.60 and 126,871.60 is: 190,307.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,956.40 : 470,934.60 = 126,871.60 : x
  2. Step 2: Convert to fraction form
    313,956.40/470,934.60 = 126,871.60/x
  3. Step 3: Cross multiply
    313,956.40x = 470,934.60 × 126,871.60
  4. Step 4: Simplify right side
    313,956.40x = 59,748,226,197.36
  5. Step 5: Solve for x
    x = 59,748,226,197.36/313,956.40
  6. Step 6: Final answer
    x = 190,307.40

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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.