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Finding the Fourth Proportional to 313,078.40, 469,876.80 and 144,857.60

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Solution

The fourth proportional to 313,078.40, 469,876.80 and 144,857.60 is: 217,406.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,078.40 : 469,876.80 = 144,857.60 : x
  2. Step 2: Convert to fraction form
    313,078.40/469,876.80 = 144,857.60/x
  3. Step 3: Cross multiply
    313,078.40x = 469,876.80 × 144,857.60
  4. Step 4: Simplify right side
    313,078.40x = 68,065,225,543.68
  5. Step 5: Solve for x
    x = 68,065,225,543.68/313,078.40
  6. Step 6: Final answer
    x = 217,406.33

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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.