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Finding the Fourth Proportional to 416,528.49, 624,794.79 and 100,985.40

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Solution

The fourth proportional to 416,528.49, 624,794.79 and 100,985.40 is: 151,478.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    416,528.49 : 624,794.79 = 100,985.40 : x
  2. Step 2: Convert to fraction form
    416,528.49/624,794.79 = 100,985.40/x
  3. Step 3: Cross multiply
    416,528.49x = 624,794.79 × 100,985.40
  4. Step 4: Simplify right side
    416,528.49x = 63,095,151,786.07
  5. Step 5: Solve for x
    x = 63,095,151,786.07/416,528.49
  6. Step 6: Final answer
    x = 151,478.60

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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.