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Finding the Fourth Proportional to 519,547.55, 778,889.33 and 220,257.95

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Solution

The fourth proportional to 519,547.55, 778,889.33 and 220,257.95 is: 330,203.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,547.55 : 778,889.33 = 220,257.95 : x
  2. Step 2: Convert to fraction form
    519,547.55/778,889.33 = 220,257.95/x
  3. Step 3: Cross multiply
    519,547.55x = 778,889.33 × 220,257.95
  4. Step 4: Simplify right side
    519,547.55x = 171,556,566,001.38
  5. Step 5: Solve for x
    x = 171,556,566,001.38/519,547.55
  6. Step 6: Final answer
    x = 330,203.78

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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.