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Finding the Fourth Proportional to 345,994.72, 477,391.23 and 210,025.30

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Solution

The fourth proportional to 345,994.72, 477,391.23 and 210,025.30 is: 289,785.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,994.72 : 477,391.23 = 210,025.30 : x
  2. Step 2: Convert to fraction form
    345,994.72/477,391.23 = 210,025.30/x
  3. Step 3: Cross multiply
    345,994.72x = 477,391.23 × 210,025.30
  4. Step 4: Simplify right side
    345,994.72x = 100,264,236,298.12
  5. Step 5: Solve for x
    x = 100,264,236,298.12/345,994.72
  6. Step 6: Final answer
    x = 289,785.45

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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.