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Finding the Fourth Proportional to 439,348.83, 606,430.28 and 255,630.63

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Solution

The fourth proportional to 439,348.83, 606,430.28 and 255,630.63 is: 352,845.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,348.83 : 606,430.28 = 255,630.63 : x
  2. Step 2: Convert to fraction form
    439,348.83/606,430.28 = 255,630.63/x
  3. Step 3: Cross multiply
    439,348.83x = 606,430.28 × 255,630.63
  4. Step 4: Simplify right side
    439,348.83x = 155,022,153,249.32
  5. Step 5: Solve for x
    x = 155,022,153,249.32/439,348.83
  6. Step 6: Final answer
    x = 352,845.26

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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.