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Finding the Fourth Proportional to 402,563.52, 555,661.44 and 259,323.12

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Solution

The fourth proportional to 402,563.52, 555,661.44 and 259,323.12 is: 357,945.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,563.52 : 555,661.44 = 259,323.12 : x
  2. Step 2: Convert to fraction form
    402,563.52/555,661.44 = 259,323.12/x
  3. Step 3: Cross multiply
    402,563.52x = 555,661.44 × 259,323.12
  4. Step 4: Simplify right side
    402,563.52x = 144,095,858,284.49
  5. Step 5: Solve for x
    x = 144,095,858,284.49/402,563.52
  6. Step 6: Final answer
    x = 357,945.64

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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.