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Finding the Fourth Proportional to 427,612.79, 590,065.59 and 255,496.49

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Solution

The fourth proportional to 427,612.79, 590,065.59 and 255,496.49 is: 352,561.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    427,612.79 : 590,065.59 = 255,496.49 : x
  2. Step 2: Convert to fraction form
    427,612.79/590,065.59 = 255,496.49/x
  3. Step 3: Cross multiply
    427,612.79x = 590,065.59 × 255,496.49
  4. Step 4: Simplify right side
    427,612.79x = 150,759,685,075.84
  5. Step 5: Solve for x
    x = 150,759,685,075.84/427,612.79
  6. Step 6: Final answer
    x = 352,561.22

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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.