Home / 390,530.48-538,777.97-245,250.81

Finding the Fourth Proportional to 390,530.48, 538,777.97 and 245,250.81

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Solution

The fourth proportional to 390,530.48, 538,777.97 and 245,250.81 is: 338,349.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,530.48 : 538,777.97 = 245,250.81 : x
  2. Step 2: Convert to fraction form
    390,530.48/538,777.97 = 245,250.81/x
  3. Step 3: Cross multiply
    390,530.48x = 538,777.97 × 245,250.81
  4. Step 4: Simplify right side
    390,530.48x = 132,135,732,326.40
  5. Step 5: Solve for x
    x = 132,135,732,326.40/390,530.48
  6. Step 6: Final answer
    x = 338,349.35

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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.