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Finding the Fourth Proportional to 572,478.75, 859,111.80 and 198,501.75

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Solution

The fourth proportional to 572,478.75, 859,111.80 and 198,501.75 is: 297,889.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,478.75 : 859,111.80 = 198,501.75 : x
  2. Step 2: Convert to fraction form
    572,478.75/859,111.80 = 198,501.75/x
  3. Step 3: Cross multiply
    572,478.75x = 859,111.80 × 198,501.75
  4. Step 4: Simplify right side
    572,478.75x = 170,535,195,745.65
  5. Step 5: Solve for x
    x = 170,535,195,745.65/572,478.75
  6. Step 6: Final answer
    x = 297,889.13

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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.