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Finding the Fourth Proportional to 345,903.70, 477,274.53 and 210,009.19

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Solution

The fourth proportional to 345,903.70, 477,274.53 and 210,009.19 is: 289,768.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,903.70 : 477,274.53 = 210,009.19 : x
  2. Step 2: Convert to fraction form
    345,903.70/477,274.53 = 210,009.19/x
  3. Step 3: Cross multiply
    345,903.70x = 477,274.53 × 210,009.19
  4. Step 4: Simplify right side
    345,903.70x = 100,232,037,452.93
  5. Step 5: Solve for x
    x = 100,232,037,452.93/345,903.70
  6. Step 6: Final answer
    x = 289,768.62

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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.