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Finding the Fourth Proportional to 385,029.66, 531,127.61 and 223,866.89

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Solution

The fourth proportional to 385,029.66, 531,127.61 and 223,866.89 is: 308,812.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,029.66 : 531,127.61 = 223,866.89 : x
  2. Step 2: Convert to fraction form
    385,029.66/531,127.61 = 223,866.89/x
  3. Step 3: Cross multiply
    385,029.66x = 531,127.61 × 223,866.89
  4. Step 4: Simplify right side
    385,029.66x = 118,901,886,243.83
  5. Step 5: Solve for x
    x = 118,901,886,243.83/385,029.66
  6. Step 6: Final answer
    x = 308,812.28

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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.