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Finding the Fourth Proportional to 231,005.80, 346,508.70 and 141,970.60

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Solution

The fourth proportional to 231,005.80, 346,508.70 and 141,970.60 is: 212,955.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,005.80 : 346,508.70 = 141,970.60 : x
  2. Step 2: Convert to fraction form
    231,005.80/346,508.70 = 141,970.60/x
  3. Step 3: Cross multiply
    231,005.80x = 346,508.70 × 141,970.60
  4. Step 4: Simplify right side
    231,005.80x = 49,194,048,044.22
  5. Step 5: Solve for x
    x = 49,194,048,044.22/231,005.80
  6. Step 6: Final answer
    x = 212,955.90

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1.5x scale

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.