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Finding the Fourth Proportional to 238,223.79, 328,749.48 and 130,800.78

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Solution

The fourth proportional to 238,223.79, 328,749.48 and 130,800.78 is: 180,505.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,223.79 : 328,749.48 = 130,800.78 : x
  2. Step 2: Convert to fraction form
    238,223.79/328,749.48 = 130,800.78/x
  3. Step 3: Cross multiply
    238,223.79x = 328,749.48 × 130,800.78
  4. Step 4: Simplify right side
    238,223.79x = 43,000,688,408.59
  5. Step 5: Solve for x
    x = 43,000,688,408.59/238,223.79
  6. Step 6: Final answer
    x = 180,505.43

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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.