Home / 390,528.25-538,712.11-227,166.36

Finding the Fourth Proportional to 390,528.25, 538,712.11 and 227,166.36

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Solution

The fourth proportional to 390,528.25, 538,712.11 and 227,166.36 is: 313,363.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,528.25 : 538,712.11 = 227,166.36 : x
  2. Step 2: Convert to fraction form
    390,528.25/538,712.11 = 227,166.36/x
  3. Step 3: Cross multiply
    390,528.25x = 538,712.11 × 227,166.36
  4. Step 4: Simplify right side
    390,528.25x = 122,377,266,528.53
  5. Step 5: Solve for x
    x = 122,377,266,528.53/390,528.25
  6. Step 6: Final answer
    x = 313,363.42

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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.