Home / 211,776,031.20-317,328,123.60-139,888,466.40

Finding the Fourth Proportional to 211,776,031.20, 317,328,123.60 and 139,888,466.40

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Solution

The fourth proportional to 211,776,031.20, 317,328,123.60 and 139,888,466.40 is: 209,610,805.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,776,031.20 : 317,328,123.60 = 139,888,466.40 : x
  2. Step 2: Convert to fraction form
    211,776,031.20/317,328,123.60 = 139,888,466.40/x
  3. Step 3: Cross multiply
    211,776,031.20x = 317,328,123.60 × 139,888,466.40
  4. Step 4: Simplify right side
    211,776,031.20x = 44,390,544,555,993,656
  5. Step 5: Solve for x
    x = 44,390,544,555,993,656/211,776,031.20
  6. Step 6: Final answer
    x = 209,610,805.83

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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.