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Finding the Fourth Proportional to 480,485.32, 721,162.71 and 256,035.40

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Solution

The fourth proportional to 480,485.32, 721,162.71 and 256,035.40 is: 384,284.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    480,485.32 : 721,162.71 = 256,035.40 : x
  2. Step 2: Convert to fraction form
    480,485.32/721,162.71 = 256,035.40/x
  3. Step 3: Cross multiply
    480,485.32x = 721,162.71 × 256,035.40
  4. Step 4: Simplify right side
    480,485.32x = 184,643,182,919.93
  5. Step 5: Solve for x
    x = 184,643,182,919.93/480,485.32
  6. Step 6: Final answer
    x = 384,284.75

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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.