Home / 385,473.11-531,959.19-211,040.40

Finding the Fourth Proportional to 385,473.11, 531,959.19 and 211,040.40

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Solution

The fourth proportional to 385,473.11, 531,959.19 and 211,040.40 is: 291,239.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,473.11 : 531,959.19 = 211,040.40 : x
  2. Step 2: Convert to fraction form
    385,473.11/531,959.19 = 211,040.40/x
  3. Step 3: Cross multiply
    385,473.11x = 531,959.19 × 211,040.40
  4. Step 4: Simplify right side
    385,473.11x = 112,264,881,986.77
  5. Step 5: Solve for x
    x = 112,264,881,986.77/385,473.11
  6. Step 6: Final answer
    x = 291,239.20

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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.