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Finding the Fourth Proportional to 357,127.05, 535,690.58 and 278,300.28

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Solution

The fourth proportional to 357,127.05, 535,690.58 and 278,300.28 is: 417,450.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    357,127.05 : 535,690.58 = 278,300.28 : x
  2. Step 2: Convert to fraction form
    357,127.05/535,690.58 = 278,300.28/x
  3. Step 3: Cross multiply
    357,127.05x = 535,690.58 × 278,300.28
  4. Step 4: Simplify right side
    357,127.05x = 149,082,837,015.86
  5. Step 5: Solve for x
    x = 149,082,837,015.86/357,127.05
  6. Step 6: Final answer
    x = 417,450.42

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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.