Home / 445,208.14-668,031.45-208,509.94

Finding the Fourth Proportional to 445,208.14, 668,031.45 and 208,509.94

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Solution

The fourth proportional to 445,208.14, 668,031.45 and 208,509.94 is: 312,867.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,208.14 : 668,031.45 = 208,509.94 : x
  2. Step 2: Convert to fraction form
    445,208.14/668,031.45 = 208,509.94/x
  3. Step 3: Cross multiply
    445,208.14x = 668,031.45 × 208,509.94
  4. Step 4: Simplify right side
    445,208.14x = 139,291,197,557.61
  5. Step 5: Solve for x
    x = 139,291,197,557.61/445,208.14
  6. Step 6: Final answer
    x = 312,867.59

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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.