Home / 426,282.08-639,350.46-141,940.40

Finding the Fourth Proportional to 426,282.08, 639,350.46 and 141,940.40

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Solution

The fourth proportional to 426,282.08, 639,350.46 and 141,940.40 is: 212,886.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,282.08 : 639,350.46 = 141,940.40 : x
  2. Step 2: Convert to fraction form
    426,282.08/639,350.46 = 141,940.40/x
  3. Step 3: Cross multiply
    426,282.08x = 639,350.46 × 141,940.40
  4. Step 4: Simplify right side
    426,282.08x = 90,749,656,835.83
  5. Step 5: Solve for x
    x = 90,749,656,835.83/426,282.08
  6. Step 6: Final answer
    x = 212,886.40

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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.