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Finding the Fourth Proportional to 512,212.80, 767,444.40 and 325,005.60

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Solution

The fourth proportional to 512,212.80, 767,444.40 and 325,005.60 is: 486,953.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    512,212.80 : 767,444.40 = 325,005.60 : x
  2. Step 2: Convert to fraction form
    512,212.80/767,444.40 = 325,005.60/x
  3. Step 3: Cross multiply
    512,212.80x = 767,444.40 × 325,005.60
  4. Step 4: Simplify right side
    512,212.80x = 249,423,727,688.64
  5. Step 5: Solve for x
    x = 249,423,727,688.64/512,212.80
  6. Step 6: Final answer
    x = 486,953.33

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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.