Home / 385,140.18-531,483.50-213,053.64

Finding the Fourth Proportional to 385,140.18, 531,483.50 and 213,053.64

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Solution

The fourth proportional to 385,140.18, 531,483.50 and 213,053.64 is: 294,008.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,140.18 : 531,483.50 = 213,053.64 : x
  2. Step 2: Convert to fraction form
    385,140.18/531,483.50 = 213,053.64/x
  3. Step 3: Cross multiply
    385,140.18x = 531,483.50 × 213,053.64
  4. Step 4: Simplify right side
    385,140.18x = 113,234,494,274.94
  5. Step 5: Solve for x
    x = 113,234,494,274.94/385,140.18
  6. Step 6: Final answer
    x = 294,008.52

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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.