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Finding the Fourth Proportional to 468,643.38, 646,728.21 and 253,783.68

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Solution

The fourth proportional to 468,643.38, 646,728.21 and 253,783.68 is: 350,221.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    468,643.38 : 646,728.21 = 253,783.68 : x
  2. Step 2: Convert to fraction form
    468,643.38/646,728.21 = 253,783.68/x
  3. Step 3: Cross multiply
    468,643.38x = 646,728.21 × 253,783.68
  4. Step 4: Simplify right side
    468,643.38x = 164,129,065,093.61
  5. Step 5: Solve for x
    x = 164,129,065,093.61/468,643.38
  6. Step 6: Final answer
    x = 350,221.67

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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.