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Finding the Fourth Proportional to 338,478.04, 507,722.46 and 128,059.48

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Solution

The fourth proportional to 338,478.04, 507,722.46 and 128,059.48 is: 192,091.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    338,478.04 : 507,722.46 = 128,059.48 : x
  2. Step 2: Convert to fraction form
    338,478.04/507,722.46 = 128,059.48/x
  3. Step 3: Cross multiply
    338,478.04x = 507,722.46 × 128,059.48
  4. Step 4: Simplify right side
    338,478.04x = 65,018,674,211.92
  5. Step 5: Solve for x
    x = 65,018,674,211.92/338,478.04
  6. Step 6: Final answer
    x = 192,091.26

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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.