Home / 387,488.54-581,127.41-245,120.11

Finding the Fourth Proportional to 387,488.54, 581,127.41 and 245,120.11

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Solution

The fourth proportional to 387,488.54, 581,127.41 and 245,120.11 is: 367,613.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,488.54 : 581,127.41 = 245,120.11 : x
  2. Step 2: Convert to fraction form
    387,488.54/581,127.41 = 245,120.11/x
  3. Step 3: Cross multiply
    387,488.54x = 581,127.41 × 245,120.11
  4. Step 4: Simplify right side
    387,488.54x = 142,446,013,823.20
  5. Step 5: Solve for x
    x = 142,446,013,823.20/387,488.54
  6. Step 6: Final answer
    x = 367,613.49

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.