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Finding the Fourth Proportional to 370,399.56, 555,607.52 and 256,435.08

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Solution

The fourth proportional to 370,399.56, 555,607.52 and 256,435.08 is: 384,658.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    370,399.56 : 555,607.52 = 256,435.08 : x
  2. Step 2: Convert to fraction form
    370,399.56/555,607.52 = 256,435.08/x
  3. Step 3: Cross multiply
    370,399.56x = 555,607.52 × 256,435.08
  4. Step 4: Simplify right side
    370,399.56x = 142,477,258,839.80
  5. Step 5: Solve for x
    x = 142,477,258,839.80/370,399.56
  6. Step 6: Final answer
    x = 384,658.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.