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Finding the Fourth Proportional to 309,596.04, 427,318.74 and 188,803.98

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Solution

The fourth proportional to 309,596.04, 427,318.74 and 188,803.98 is: 260,595.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,596.04 : 427,318.74 = 188,803.98 : x
  2. Step 2: Convert to fraction form
    309,596.04/427,318.74 = 188,803.98/x
  3. Step 3: Cross multiply
    309,596.04x = 427,318.74 × 188,803.98
  4. Step 4: Simplify right side
    309,596.04x = 80,679,478,840.59
  5. Step 5: Solve for x
    x = 80,679,478,840.59/309,596.04
  6. Step 6: Final answer
    x = 260,595.97

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.