Home / 279,985,019.40-419,977,529.10-262,069,115.40

Finding the Fourth Proportional to 279,985,019.40, 419,977,529.10 and 262,069,115.40

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Solution

The fourth proportional to 279,985,019.40, 419,977,529.10 and 262,069,115.40 is: 393,103,673.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,985,019.40 : 419,977,529.10 = 262,069,115.40 : x
  2. Step 2: Convert to fraction form
    279,985,019.40/419,977,529.10 = 262,069,115.40/x
  3. Step 3: Cross multiply
    279,985,019.40x = 419,977,529.10 × 262,069,115.40
  4. Step 4: Simplify right side
    279,985,019.40x = 110,063,139,539,114,768
  5. Step 5: Solve for x
    x = 110,063,139,539,114,768/279,985,019.40
  6. Step 6: Final answer
    x = 393,103,673.10

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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.