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Finding the Fourth Proportional to 451,643.40, 677,465.10 and 185,315.40

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Solution

The fourth proportional to 451,643.40, 677,465.10 and 185,315.40 is: 277,973.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    451,643.40 : 677,465.10 = 185,315.40 : x
  2. Step 2: Convert to fraction form
    451,643.40/677,465.10 = 185,315.40/x
  3. Step 3: Cross multiply
    451,643.40x = 677,465.10 × 185,315.40
  4. Step 4: Simplify right side
    451,643.40x = 125,544,715,992.54
  5. Step 5: Solve for x
    x = 125,544,715,992.54/451,643.40
  6. Step 6: Final answer
    x = 277,973.10

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Similar ratio
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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.