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Finding the Fourth Proportional to 518,006.86, 776,806.08 and 251,688.58

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Solution

The fourth proportional to 518,006.86, 776,806.08 and 251,688.58 is: 377,433.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,006.86 : 776,806.08 = 251,688.58 : x
  2. Step 2: Convert to fraction form
    518,006.86/776,806.08 = 251,688.58/x
  3. Step 3: Cross multiply
    518,006.86x = 776,806.08 × 251,688.58
  4. Step 4: Simplify right side
    518,006.86x = 195,513,219,210.57
  5. Step 5: Solve for x
    x = 195,513,219,210.57/518,006.86
  6. Step 6: Final answer
    x = 377,433.65

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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.