Home / 385,381.83-531,803.63-213,289.38

Finding the Fourth Proportional to 385,381.83, 531,803.63 and 213,289.38

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Solution

The fourth proportional to 385,381.83, 531,803.63 and 213,289.38 is: 294,326.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,381.83 : 531,803.63 = 213,289.38 : x
  2. Step 2: Convert to fraction form
    385,381.83/531,803.63 = 213,289.38/x
  3. Step 3: Cross multiply
    385,381.83x = 531,803.63 × 213,289.38
  4. Step 4: Simplify right side
    385,381.83x = 113,428,064,362.22
  5. Step 5: Solve for x
    x = 113,428,064,362.22/385,381.83
  6. Step 6: Final answer
    x = 294,326.45

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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.