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Finding the Fourth Proportional to 145,643.54, 218,468.04 and 40,465.25

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Solution

The fourth proportional to 145,643.54, 218,468.04 and 40,465.25 is: 60,698.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,643.54 : 218,468.04 = 40,465.25 : x
  2. Step 2: Convert to fraction form
    145,643.54/218,468.04 = 40,465.25/x
  3. Step 3: Cross multiply
    145,643.54x = 218,468.04 × 40,465.25
  4. Step 4: Simplify right side
    145,643.54x = 8,840,362,763.27
  5. Step 5: Solve for x
    x = 8,840,362,763.27/145,643.54
  6. Step 6: Final answer
    x = 60,698.63

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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.