Home / 257,946,005.20-386,919,007.80-200,479,518.40

Finding the Fourth Proportional to 257,946,005.20, 386,919,007.80 and 200,479,518.40

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Solution

The fourth proportional to 257,946,005.20, 386,919,007.80 and 200,479,518.40 is: 300,719,277.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,946,005.20 : 386,919,007.80 = 200,479,518.40 : x
  2. Step 2: Convert to fraction form
    257,946,005.20/386,919,007.80 = 200,479,518.40/x
  3. Step 3: Cross multiply
    257,946,005.20x = 386,919,007.80 × 200,479,518.40
  4. Step 4: Simplify right side
    257,946,005.20x = 77,569,336,343,549,856
  5. Step 5: Solve for x
    x = 77,569,336,343,549,856/257,946,005.20
  6. Step 6: Final answer
    x = 300,719,277.60

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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.