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Finding the Fourth Proportional to 660,069.60, 990,007.20 and 186,802.80

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Solution

The fourth proportional to 660,069.60, 990,007.20 and 186,802.80 is: 280,176.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,069.60 : 990,007.20 = 186,802.80 : x
  2. Step 2: Convert to fraction form
    660,069.60/990,007.20 = 186,802.80/x
  3. Step 3: Cross multiply
    660,069.60x = 990,007.20 × 186,802.80
  4. Step 4: Simplify right side
    660,069.60x = 184,936,116,980.16
  5. Step 5: Solve for x
    x = 184,936,116,980.16/660,069.60
  6. Step 6: Final answer
    x = 280,176.69

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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.