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Finding the Fourth Proportional to 245,828.80, 368,597.40 and 127,730.80

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Solution

The fourth proportional to 245,828.80, 368,597.40 and 127,730.80 is: 191,520.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,828.80 : 368,597.40 = 127,730.80 : x
  2. Step 2: Convert to fraction form
    245,828.80/368,597.40 = 127,730.80/x
  3. Step 3: Cross multiply
    245,828.80x = 368,597.40 × 127,730.80
  4. Step 4: Simplify right side
    245,828.80x = 47,081,240,779.92
  5. Step 5: Solve for x
    x = 47,081,240,779.92/245,828.80
  6. Step 6: Final answer
    x = 191,520.44

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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.