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Finding the Fourth Proportional to 245,547.20, 368,126.40 and 134,739.20

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Solution

The fourth proportional to 245,547.20, 368,126.40 and 134,739.20 is: 202,002.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,547.20 : 368,126.40 = 134,739.20 : x
  2. Step 2: Convert to fraction form
    245,547.20/368,126.40 = 134,739.20/x
  3. Step 3: Cross multiply
    245,547.20x = 368,126.40 × 134,739.20
  4. Step 4: Simplify right side
    245,547.20x = 49,601,056,634.88
  5. Step 5: Solve for x
    x = 49,601,056,634.88/245,547.20
  6. Step 6: Final answer
    x = 202,002.13

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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.