Home / 280,552,499.10-420,828,748.65-86,446,626.30

Finding the Fourth Proportional to 280,552,499.10, 420,828,748.65 and 86,446,626.30

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Solution

The fourth proportional to 280,552,499.10, 420,828,748.65 and 86,446,626.30 is: 129,669,939.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,552,499.10 : 420,828,748.65 = 86,446,626.30 : x
  2. Step 2: Convert to fraction form
    280,552,499.10/420,828,748.65 = 86,446,626.30/x
  3. Step 3: Cross multiply
    280,552,499.10x = 420,828,748.65 × 86,446,626.30
  4. Step 4: Simplify right side
    280,552,499.10x = 36,379,225,570,843,176
  5. Step 5: Solve for x
    x = 36,379,225,570,843,176/280,552,499.10
  6. Step 6: Final answer
    x = 129,669,939.45

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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.