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Finding the Fourth Proportional to 385,031.66, 531,130.37 and 223,868.89

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Solution

The fourth proportional to 385,031.66, 531,130.37 and 223,868.89 is: 308,815.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,031.66 : 531,130.37 = 223,868.89 : x
  2. Step 2: Convert to fraction form
    385,031.66/531,130.37 = 223,868.89/x
  3. Step 3: Cross multiply
    385,031.66x = 531,130.37 × 223,868.89
  4. Step 4: Simplify right side
    385,031.66x = 118,903,566,377.19
  5. Step 5: Solve for x
    x = 118,903,566,377.19/385,031.66
  6. Step 6: Final answer
    x = 308,815.04

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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.