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Finding the Fourth Proportional to 427,392.60, 589,616.46 and 257,530.20

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Solution

The fourth proportional to 427,392.60, 589,616.46 and 257,530.20 is: 355,280.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    427,392.60 : 589,616.46 = 257,530.20 : x
  2. Step 2: Convert to fraction form
    427,392.60/589,616.46 = 257,530.20/x
  3. Step 3: Cross multiply
    427,392.60x = 589,616.46 × 257,530.20
  4. Step 4: Simplify right side
    427,392.60x = 151,844,044,867.09
  5. Step 5: Solve for x
    x = 151,844,044,867.09/427,392.60
  6. Step 6: Final answer
    x = 355,280.00

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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.