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Finding the Fourth Proportional to 245,886.83, 339,322.32 and 138,491.48

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Solution

The fourth proportional to 245,886.83, 339,322.32 and 138,491.48 is: 191,117.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,886.83 : 339,322.32 = 138,491.48 : x
  2. Step 2: Convert to fraction form
    245,886.83/339,322.32 = 138,491.48/x
  3. Step 3: Cross multiply
    245,886.83x = 339,322.32 × 138,491.48
  4. Step 4: Simplify right side
    245,886.83x = 46,993,248,597.22
  5. Step 5: Solve for x
    x = 46,993,248,597.22/245,886.83
  6. Step 6: Final answer
    x = 191,117.39

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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.