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Finding the Fourth Proportional to 415,035.04, 621,615.60 and 248,471.20

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Solution

The fourth proportional to 415,035.04, 621,615.60 and 248,471.20 is: 372,145.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    415,035.04 : 621,615.60 = 248,471.20 : x
  2. Step 2: Convert to fraction form
    415,035.04/621,615.60 = 248,471.20/x
  3. Step 3: Cross multiply
    415,035.04x = 621,615.60 × 248,471.20
  4. Step 4: Simplify right side
    415,035.04x = 154,453,574,070.72
  5. Step 5: Solve for x
    x = 154,453,574,070.72/415,035.04
  6. Step 6: Final answer
    x = 372,145.87

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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.