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Finding the Fourth Proportional to 507,622.68, 700,518.78 and 281,268.18

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Solution

The fourth proportional to 507,622.68, 700,518.78 and 281,268.18 is: 388,149.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    507,622.68 : 700,518.78 = 281,268.18 : x
  2. Step 2: Convert to fraction form
    507,622.68/700,518.78 = 281,268.18/x
  3. Step 3: Cross multiply
    507,622.68x = 700,518.78 × 281,268.18
  4. Step 4: Simplify right side
    507,622.68x = 197,033,642,306.42
  5. Step 5: Solve for x
    x = 197,033,642,306.42/507,622.68
  6. Step 6: Final answer
    x = 388,149.80

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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.