Home / 208,367,468.20-312,663,176.70-87,211,167.40

Finding the Fourth Proportional to 208,367,468.20, 312,663,176.70 and 87,211,167.40

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Solution

The fourth proportional to 208,367,468.20, 312,663,176.70 and 87,211,167.40 is: 130,863,617.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,367,468.20 : 312,663,176.70 = 87,211,167.40 : x
  2. Step 2: Convert to fraction form
    208,367,468.20/312,663,176.70 = 87,211,167.40/x
  3. Step 3: Cross multiply
    208,367,468.20x = 312,663,176.70 × 87,211,167.40
  4. Step 4: Simplify right side
    208,367,468.20x = 27,267,720,642,999,480
  5. Step 5: Solve for x
    x = 27,267,720,642,999,480/208,367,468.20
  6. Step 6: Final answer
    x = 130,863,617.43

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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.