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Finding the Fourth Proportional to 402,745.52, 555,912.72 and 259,505.12

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Solution

The fourth proportional to 402,745.52, 555,912.72 and 259,505.12 is: 358,196.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,745.52 : 555,912.72 = 259,505.12 : x
  2. Step 2: Convert to fraction form
    402,745.52/555,912.72 = 259,505.12/x
  3. Step 3: Cross multiply
    402,745.52x = 555,912.72 × 259,505.12
  4. Step 4: Simplify right side
    402,745.52x = 144,262,197,113.13
  5. Step 5: Solve for x
    x = 144,262,197,113.13/402,745.52
  6. Step 6: Final answer
    x = 358,196.90

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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.