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Finding the Fourth Proportional to 368,682.03, 508,509.55 and 278,041.81

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Solution

The fourth proportional to 368,682.03, 508,509.55 and 278,041.81 is: 383,492.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,682.03 : 508,509.55 = 278,041.81 : x
  2. Step 2: Convert to fraction form
    368,682.03/508,509.55 = 278,041.81/x
  3. Step 3: Cross multiply
    368,682.03x = 508,509.55 × 278,041.81
  4. Step 4: Simplify right side
    368,682.03x = 141,386,915,684.29
  5. Step 5: Solve for x
    x = 141,386,915,684.29/368,682.03
  6. Step 6: Final answer
    x = 383,492.83

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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.