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Finding the Fourth Proportional to 313,890.40, 470,835.60 and 166,434.40

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Solution

The fourth proportional to 313,890.40, 470,835.60 and 166,434.40 is: 249,651.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,890.40 : 470,835.60 = 166,434.40 : x
  2. Step 2: Convert to fraction form
    313,890.40/470,835.60 = 166,434.40/x
  3. Step 3: Cross multiply
    313,890.40x = 470,835.60 × 166,434.40
  4. Step 4: Simplify right side
    313,890.40x = 78,363,240,584.64
  5. Step 5: Solve for x
    x = 78,363,240,584.64/313,890.40
  6. Step 6: Final answer
    x = 249,651.60

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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.