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Finding the Fourth Proportional to 245,339.90, 338,570.93 and 136,445.77

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Solution

The fourth proportional to 245,339.90, 338,570.93 and 136,445.77 is: 188,296.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,339.90 : 338,570.93 = 136,445.77 : x
  2. Step 2: Convert to fraction form
    245,339.90/338,570.93 = 136,445.77/x
  3. Step 3: Cross multiply
    245,339.90x = 338,570.93 × 136,445.77
  4. Step 4: Simplify right side
    245,339.90x = 46,196,571,243.47
  5. Step 5: Solve for x
    x = 46,196,571,243.47/245,339.90
  6. Step 6: Final answer
    x = 188,296.20

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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.