Home / 387,556.03-581,296.45-117,686.50

Finding the Fourth Proportional to 387,556.03, 581,296.45 and 117,686.50

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Solution

The fourth proportional to 387,556.03, 581,296.45 and 117,686.50 is: 176,518.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,556.03 : 581,296.45 = 117,686.50 : x
  2. Step 2: Convert to fraction form
    387,556.03/581,296.45 = 117,686.50/x
  3. Step 3: Cross multiply
    387,556.03x = 581,296.45 × 117,686.50
  4. Step 4: Simplify right side
    387,556.03x = 68,410,746,405.92
  5. Step 5: Solve for x
    x = 68,410,746,405.92/387,556.03
  6. Step 6: Final answer
    x = 176,518.34

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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.