Home / 386,330.40-579,495.60-105,837.60

Finding the Fourth Proportional to 386,330.40, 579,495.60 and 105,837.60

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Solution

The fourth proportional to 386,330.40, 579,495.60 and 105,837.60 is: 158,756.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,330.40 : 579,495.60 = 105,837.60 : x
  2. Step 2: Convert to fraction form
    386,330.40/579,495.60 = 105,837.60/x
  3. Step 3: Cross multiply
    386,330.40x = 579,495.60 × 105,837.60
  4. Step 4: Simplify right side
    386,330.40x = 61,332,423,514.56
  5. Step 5: Solve for x
    x = 61,332,423,514.56/386,330.40
  6. Step 6: Final answer
    x = 158,756.40

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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.