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Finding the Fourth Proportional to 550,018.40, 825,106.72 and 208,587.52

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Solution

The fourth proportional to 550,018.40, 825,106.72 and 208,587.52 is: 312,911.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    550,018.40 : 825,106.72 = 208,587.52 : x
  2. Step 2: Convert to fraction form
    550,018.40/825,106.72 = 208,587.52/x
  3. Step 3: Cross multiply
    550,018.40x = 825,106.72 × 208,587.52
  4. Step 4: Simplify right side
    550,018.40x = 172,106,964,460.13
  5. Step 5: Solve for x
    x = 172,106,964,460.13/550,018.40
  6. Step 6: Final answer
    x = 312,911.29

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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.