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Finding the Fourth Proportional to 313,090.40, 469,894.80 and 144,869.60

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Solution

The fourth proportional to 313,090.40, 469,894.80 and 144,869.60 is: 217,424.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,090.40 : 469,894.80 = 144,869.60 : x
  2. Step 2: Convert to fraction form
    313,090.40/469,894.80 = 144,869.60/x
  3. Step 3: Cross multiply
    313,090.40x = 469,894.80 × 144,869.60
  4. Step 4: Simplify right side
    313,090.40x = 68,073,471,718.08
  5. Step 5: Solve for x
    x = 68,073,471,718.08/313,090.40
  6. Step 6: Final answer
    x = 217,424.33

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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.