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Finding the Fourth Proportional to 398,603.76, 550,095.06 and 228,848.82

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Solution

The fourth proportional to 398,603.76, 550,095.06 and 228,848.82 is: 315,823.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,603.76 : 550,095.06 = 228,848.82 : x
  2. Step 2: Convert to fraction form
    398,603.76/550,095.06 = 228,848.82/x
  3. Step 3: Cross multiply
    398,603.76x = 550,095.06 × 228,848.82
  4. Step 4: Simplify right side
    398,603.76x = 125,888,605,368.83
  5. Step 5: Solve for x
    x = 125,888,605,368.83/398,603.76
  6. Step 6: Final answer
    x = 315,823.93

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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.