Home / 280,552,443.10-420,828,664.65-86,446,570.30

Finding the Fourth Proportional to 280,552,443.10, 420,828,664.65 and 86,446,570.30

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Solution

The fourth proportional to 280,552,443.10, 420,828,664.65 and 86,446,570.30 is: 129,669,855.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,552,443.10 : 420,828,664.65 = 86,446,570.30 : x
  2. Step 2: Convert to fraction form
    280,552,443.10/420,828,664.65 = 86,446,570.30/x
  3. Step 3: Cross multiply
    280,552,443.10x = 420,828,664.65 × 86,446,570.30
  4. Step 4: Simplify right side
    280,552,443.10x = 36,379,194,742,921,344
  5. Step 5: Solve for x
    x = 36,379,194,742,921,344/280,552,443.10
  6. Step 6: Final answer
    x = 129,669,855.45

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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.