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Finding the Fourth Proportional to 345,424.51, 518,155.26 and 108,785.62

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Solution

The fourth proportional to 345,424.51, 518,155.26 and 108,785.62 is: 163,184.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,424.51 : 518,155.26 = 108,785.62 : x
  2. Step 2: Convert to fraction form
    345,424.51/518,155.26 = 108,785.62/x
  3. Step 3: Cross multiply
    345,424.51x = 518,155.26 × 108,785.62
  4. Step 4: Simplify right side
    345,424.51x = 56,367,841,215.36
  5. Step 5: Solve for x
    x = 56,367,841,215.36/345,424.51
  6. Step 6: Final answer
    x = 163,184.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.