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Finding the Fourth Proportional to 210,037,999.95, 315,056,999.93 and 210,037,999.95

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Solution

The fourth proportional to 210,037,999.95, 315,056,999.93 and 210,037,999.95 is: 315,056,999.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,037,999.95 : 315,056,999.93 = 210,037,999.95 : x
  2. Step 2: Convert to fraction form
    210,037,999.95/315,056,999.93 = 210,037,999.95/x
  3. Step 3: Cross multiply
    210,037,999.95x = 315,056,999.93 × 210,037,999.95
  4. Step 4: Simplify right side
    210,037,999.95x = 66,173,942,134,494,296
  5. Step 5: Solve for x
    x = 66,173,942,134,494,296/210,037,999.95
  6. Step 6: Final answer
    x = 315,056,999.93

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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.