Home / 210,407,813.40-315,618,937.20-64,840,218.60

Finding the Fourth Proportional to 210,407,813.40, 315,618,937.20 and 64,840,218.60

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Solution

The fourth proportional to 210,407,813.40, 315,618,937.20 and 64,840,218.60 is: 97,262,551.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,407,813.40 : 315,618,937.20 = 64,840,218.60 : x
  2. Step 2: Convert to fraction form
    210,407,813.40/315,618,937.20 = 64,840,218.60/x
  3. Step 3: Cross multiply
    210,407,813.40x = 315,618,937.20 × 64,840,218.60
  4. Step 4: Simplify right side
    210,407,813.40x = 20,464,800,882,347,672
  5. Step 5: Solve for x
    x = 20,464,800,882,347,672/210,407,813.40
  6. Step 6: Final answer
    x = 97,262,551.95

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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.