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Finding the Fourth Proportional to 245,445.20, 368,167.80 and 127,347.20

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Solution

The fourth proportional to 245,445.20, 368,167.80 and 127,347.20 is: 191,020.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,445.20 : 368,167.80 = 127,347.20 : x
  2. Step 2: Convert to fraction form
    245,445.20/368,167.80 = 127,347.20/x
  3. Step 3: Cross multiply
    245,445.20x = 368,167.80 × 127,347.20
  4. Step 4: Simplify right side
    245,445.20x = 46,885,138,460.16
  5. Step 5: Solve for x
    x = 46,885,138,460.16/245,445.20
  6. Step 6: Final answer
    x = 191,020.80

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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.