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Finding the Fourth Proportional to 395,205.78, 592,870.64 and 128,904.82

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Solution

The fourth proportional to 395,205.78, 592,870.64 and 128,904.82 is: 193,377.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,205.78 : 592,870.64 = 128,904.82 : x
  2. Step 2: Convert to fraction form
    395,205.78/592,870.64 = 128,904.82/x
  3. Step 3: Cross multiply
    395,205.78x = 592,870.64 × 128,904.82
  4. Step 4: Simplify right side
    395,205.78x = 76,423,881,730.87
  5. Step 5: Solve for x
    x = 76,423,881,730.87/395,205.78
  6. Step 6: Final answer
    x = 193,377.44

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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.