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Finding the Fourth Proportional to 245,742.56, 368,702.52 and 85,842.08

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Solution

The fourth proportional to 245,742.56, 368,702.52 and 85,842.08 is: 128,794.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,742.56 : 368,702.52 = 85,842.08 : x
  2. Step 2: Convert to fraction form
    245,742.56/368,702.52 = 85,842.08/x
  3. Step 3: Cross multiply
    245,742.56x = 368,702.52 × 85,842.08
  4. Step 4: Simplify right side
    245,742.56x = 31,650,191,218.04
  5. Step 5: Solve for x
    x = 31,650,191,218.04/245,742.56
  6. Step 6: Final answer
    x = 128,794.10

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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.