Home / 385,123.48-531,429.66-213,014.07

Finding the Fourth Proportional to 385,123.48, 531,429.66 and 213,014.07

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Solution

The fourth proportional to 385,123.48, 531,429.66 and 213,014.07 is: 293,936.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,123.48 : 531,429.66 = 213,014.07 : x
  2. Step 2: Convert to fraction form
    385,123.48/531,429.66 = 213,014.07/x
  3. Step 3: Cross multiply
    385,123.48x = 531,429.66 × 213,014.07
  4. Step 4: Simplify right side
    385,123.48x = 113,201,994,795.32
  5. Step 5: Solve for x
    x = 113,201,994,795.32/385,123.48
  6. Step 6: Final answer
    x = 293,936.88

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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.