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Finding the Fourth Proportional to 518,759.62, 778,489.95 and 181,803.67

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Solution

The fourth proportional to 518,759.62, 778,489.95 and 181,803.67 is: 272,828.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,759.62 : 778,489.95 = 181,803.67 : x
  2. Step 2: Convert to fraction form
    518,759.62/778,489.95 = 181,803.67/x
  3. Step 3: Cross multiply
    518,759.62x = 778,489.95 × 181,803.67
  4. Step 4: Simplify right side
    518,759.62x = 141,532,329,968.12
  5. Step 5: Solve for x
    x = 141,532,329,968.12/518,759.62
  6. Step 6: Final answer
    x = 272,828.35

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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.