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Finding the Fourth Proportional to 243,779.14, 336,432.79 and 136,383.74

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Solution

The fourth proportional to 243,779.14, 336,432.79 and 136,383.74 is: 188,219.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,779.14 : 336,432.79 = 136,383.74 : x
  2. Step 2: Convert to fraction form
    243,779.14/336,432.79 = 136,383.74/x
  3. Step 3: Cross multiply
    243,779.14x = 336,432.79 × 136,383.74
  4. Step 4: Simplify right side
    243,779.14x = 45,883,962,158.83
  5. Step 5: Solve for x
    x = 45,883,962,158.83/243,779.14
  6. Step 6: Final answer
    x = 188,219.39

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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.