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Finding the Fourth Proportional to 518,948.62, 778,455.76 and 219,373.36

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Solution

The fourth proportional to 518,948.62, 778,455.76 and 219,373.36 is: 329,073.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,948.62 : 778,455.76 = 219,373.36 : x
  2. Step 2: Convert to fraction form
    518,948.62/778,455.76 = 219,373.36/x
  3. Step 3: Cross multiply
    518,948.62x = 778,455.76 × 219,373.36
  4. Step 4: Simplify right side
    518,948.62x = 170,772,455,682.55
  5. Step 5: Solve for x
    x = 170,772,455,682.55/518,948.62
  6. Step 6: Final answer
    x = 329,073.92

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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.