Home / 328,815.40-493,223.10-257,956.60

Finding the Fourth Proportional to 328,815.40, 493,223.10 and 257,956.60

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Solution

The fourth proportional to 328,815.40, 493,223.10 and 257,956.60 is: 386,934.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,815.40 : 493,223.10 = 257,956.60 : x
  2. Step 2: Convert to fraction form
    328,815.40/493,223.10 = 257,956.60/x
  3. Step 3: Cross multiply
    328,815.40x = 493,223.10 × 257,956.60
  4. Step 4: Simplify right side
    328,815.40x = 127,230,153,917.46
  5. Step 5: Solve for x
    x = 127,230,153,917.46/328,815.40
  6. Step 6: Final answer
    x = 386,934.90

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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.