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Finding the Fourth Proportional to 280,866,709.80, 421,300,064.70 and 246,854,485.80

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Solution

The fourth proportional to 280,866,709.80, 421,300,064.70 and 246,854,485.80 is: 370,281,728.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,866,709.80 : 421,300,064.70 = 246,854,485.80 : x
  2. Step 2: Convert to fraction form
    280,866,709.80/421,300,064.70 = 246,854,485.80/x
  3. Step 3: Cross multiply
    280,866,709.80x = 421,300,064.70 × 246,854,485.80
  4. Step 4: Simplify right side
    280,866,709.80x = 103,999,810,839,025,232
  5. Step 5: Solve for x
    x = 103,999,810,839,025,232/280,866,709.80
  6. Step 6: Final answer
    x = 370,281,728.70

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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.