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Finding the Fourth Proportional to 243,788.40, 336,430.13 and 136,368.42

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Solution

The fourth proportional to 243,788.40, 336,430.13 and 136,368.42 is: 188,189.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,788.40 : 336,430.13 = 136,368.42 : x
  2. Step 2: Convert to fraction form
    243,788.40/336,430.13 = 136,368.42/x
  3. Step 3: Cross multiply
    243,788.40x = 336,430.13 × 136,368.42
  4. Step 4: Simplify right side
    243,788.40x = 45,878,444,586.65
  5. Step 5: Solve for x
    x = 45,878,444,586.65/243,788.40
  6. Step 6: Final answer
    x = 188,189.61

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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.