Home / 402,268,807.70-603,403,211.55-143,775,905.30

Finding the Fourth Proportional to 402,268,807.70, 603,403,211.55 and 143,775,905.30

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Solution

The fourth proportional to 402,268,807.70, 603,403,211.55 and 143,775,905.30 is: 215,663,857.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,268,807.70 : 603,403,211.55 = 143,775,905.30 : x
  2. Step 2: Convert to fraction form
    402,268,807.70/603,403,211.55 = 143,775,905.30/x
  3. Step 3: Cross multiply
    402,268,807.70x = 603,403,211.55 × 143,775,905.30
  4. Step 4: Simplify right side
    402,268,807.70x = 86,754,843,001,528,672
  5. Step 5: Solve for x
    x = 86,754,843,001,528,672/402,268,807.70
  6. Step 6: Final answer
    x = 215,663,857.95

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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.