Home / 280,032,486.30-420,048,729.45-252,291,266.10

Finding the Fourth Proportional to 280,032,486.30, 420,048,729.45 and 252,291,266.10

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Solution

The fourth proportional to 280,032,486.30, 420,048,729.45 and 252,291,266.10 is: 378,436,899.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,032,486.30 : 420,048,729.45 = 252,291,266.10 : x
  2. Step 2: Convert to fraction form
    280,032,486.30/420,048,729.45 = 252,291,266.10/x
  3. Step 3: Cross multiply
    280,032,486.30x = 420,048,729.45 × 252,291,266.10
  4. Step 4: Simplify right side
    280,032,486.30x = 105,974,625,776,636,848
  5. Step 5: Solve for x
    x = 105,974,625,776,636,848/280,032,486.30
  6. Step 6: Final answer
    x = 378,436,899.15

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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.