Home / 243,823.81-336,504.78-136,421.05

Finding the Fourth Proportional to 243,823.81, 336,504.78 and 136,421.05

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Solution

The fourth proportional to 243,823.81, 336,504.78 and 136,421.05 is: 188,276.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,823.81 : 336,504.78 = 136,421.05 : x
  2. Step 2: Convert to fraction form
    243,823.81/336,504.78 = 136,421.05/x
  3. Step 3: Cross multiply
    243,823.81x = 336,504.78 × 136,421.05
  4. Step 4: Simplify right side
    243,823.81x = 45,906,335,417.62
  5. Step 5: Solve for x
    x = 45,906,335,417.62/243,823.81
  6. Step 6: Final answer
    x = 188,276.67

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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.