Home / 210,006,008.40-315,009,012.60-137,446,597.20

Finding the Fourth Proportional to 210,006,008.40, 315,009,012.60 and 137,446,597.20

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Solution

The fourth proportional to 210,006,008.40, 315,009,012.60 and 137,446,597.20 is: 206,169,895.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,006,008.40 : 315,009,012.60 = 137,446,597.20 : x
  2. Step 2: Convert to fraction form
    210,006,008.40/315,009,012.60 = 137,446,597.20/x
  3. Step 3: Cross multiply
    210,006,008.40x = 315,009,012.60 × 137,446,597.20
  4. Step 4: Simplify right side
    210,006,008.40x = 43,296,916,869,201,928
  5. Step 5: Solve for x
    x = 43,296,916,869,201,928/210,006,008.40
  6. Step 6: Final answer
    x = 206,169,895.80

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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.