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Finding the Fourth Proportional to 425,615.40, 587,345.40 and 234,628.79

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Solution

The fourth proportional to 425,615.40, 587,345.40 and 234,628.79 is: 323,785.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,615.40 : 587,345.40 = 234,628.79 : x
  2. Step 2: Convert to fraction form
    425,615.40/587,345.40 = 234,628.79/x
  3. Step 3: Cross multiply
    425,615.40x = 587,345.40 × 234,628.79
  4. Step 4: Simplify right side
    425,615.40x = 137,808,141,982.43
  5. Step 5: Solve for x
    x = 137,808,141,982.43/425,615.40
  6. Step 6: Final answer
    x = 323,785.61

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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.