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Finding the Fourth Proportional to 248,384.98, 342,779.54 and 139,508.47

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Solution

The fourth proportional to 248,384.98, 342,779.54 and 139,508.47 is: 192,526.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,384.98 : 342,779.54 = 139,508.47 : x
  2. Step 2: Convert to fraction form
    248,384.98/342,779.54 = 139,508.47/x
  3. Step 3: Cross multiply
    248,384.98x = 342,779.54 × 139,508.47
  4. Step 4: Simplify right side
    248,384.98x = 47,820,647,618.21
  5. Step 5: Solve for x
    x = 47,820,647,618.21/248,384.98
  6. Step 6: Final answer
    x = 192,526.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.