Home / 210,006,000.40-315,009,000.60-137,446,589.20

Finding the Fourth Proportional to 210,006,000.40, 315,009,000.60 and 137,446,589.20

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Solution

The fourth proportional to 210,006,000.40, 315,009,000.60 and 137,446,589.20 is: 206,169,883.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,006,000.40 : 315,009,000.60 = 137,446,589.20 : x
  2. Step 2: Convert to fraction form
    210,006,000.40/315,009,000.60 = 137,446,589.20/x
  3. Step 3: Cross multiply
    210,006,000.40x = 315,009,000.60 × 137,446,589.20
  4. Step 4: Simplify right side
    210,006,000.40x = 43,296,912,699,770,752
  5. Step 5: Solve for x
    x = 43,296,912,699,770,752/210,006,000.40
  6. Step 6: Final answer
    x = 206,169,883.80

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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.