Home / 210,015,251.40-315,022,877.10-137,455,840.20

Finding the Fourth Proportional to 210,015,251.40, 315,022,877.10 and 137,455,840.20

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Solution

The fourth proportional to 210,015,251.40, 315,022,877.10 and 137,455,840.20 is: 206,183,760.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,015,251.40 : 315,022,877.10 = 137,455,840.20 : x
  2. Step 2: Convert to fraction form
    210,015,251.40/315,022,877.10 = 137,455,840.20/x
  3. Step 3: Cross multiply
    210,015,251.40x = 315,022,877.10 × 137,455,840.20
  4. Step 4: Simplify right side
    210,015,251.40x = 43,301,734,254,001,840
  5. Step 5: Solve for x
    x = 43,301,734,254,001,840/210,015,251.40
  6. Step 6: Final answer
    x = 206,183,760.30

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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.