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Finding the Fourth Proportional to 507,699.78, 700,625.64 and 281,345.28

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Solution

The fourth proportional to 507,699.78, 700,625.64 and 281,345.28 is: 388,256.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    507,699.78 : 700,625.64 = 281,345.28 : x
  2. Step 2: Convert to fraction form
    507,699.78/700,625.64 = 281,345.28/x
  3. Step 3: Cross multiply
    507,699.78x = 700,625.64 × 281,345.28
  4. Step 4: Simplify right side
    507,699.78x = 197,117,716,860.98
  5. Step 5: Solve for x
    x = 197,117,716,860.98/507,699.78
  6. Step 6: Final answer
    x = 388,256.46

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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.