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Finding the Fourth Proportional to 243,690.80, 336,291 and 136,259.60

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Solution

The fourth proportional to 243,690.80, 336,291 and 136,259.60 is: 188,036.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,690.80 : 336,291 = 136,259.60 : x
  2. Step 2: Convert to fraction form
    243,690.80/336,291 = 136,259.60/x
  3. Step 3: Cross multiply
    243,690.80x = 336,291 × 136,259.60
  4. Step 4: Simplify right side
    243,690.80x = 45,822,877,143.60
  5. Step 5: Solve for x
    x = 45,822,877,143.60/243,690.80
  6. Step 6: Final answer
    x = 188,036.96

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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.