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Finding the Fourth Proportional to 420,373.87, 630,543.16 and 195,657.01

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Solution

The fourth proportional to 420,373.87, 630,543.16 and 195,657.01 is: 293,477.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,373.87 : 630,543.16 = 195,657.01 : x
  2. Step 2: Convert to fraction form
    420,373.87/630,543.16 = 195,657.01/x
  3. Step 3: Cross multiply
    420,373.87x = 630,543.16 × 195,657.01
  4. Step 4: Simplify right side
    420,373.87x = 123,370,189,361.55
  5. Step 5: Solve for x
    x = 123,370,189,361.55/420,373.87
  6. Step 6: Final answer
    x = 293,477.30

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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.