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Finding the Fourth Proportional to 14,185,318.80, 21,277,978.20 and 5,208,704.40

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Solution

The fourth proportional to 14,185,318.80, 21,277,978.20 and 5,208,704.40 is: 7,813,056.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,185,318.80 : 21,277,978.20 = 5,208,704.40 : x
  2. Step 2: Convert to fraction form
    14,185,318.80/21,277,978.20 = 5,208,704.40/x
  3. Step 3: Cross multiply
    14,185,318.80x = 21,277,978.20 × 5,208,704.40
  4. Step 4: Simplify right side
    14,185,318.80x = 110,830,698,673,444.08
  5. Step 5: Solve for x
    x = 110,830,698,673,444.08/14,185,318.80
  6. Step 6: Final answer
    x = 7,813,056.60

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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.