Home / 280,391,919.57-420,681,318.93-176,641,346.70

Finding the Fourth Proportional to 280,391,919.57, 420,681,318.93 and 176,641,346.70

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Solution

The fourth proportional to 280,391,919.57, 420,681,318.93 and 176,641,346.70 is: 265,020,885.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,391,919.57 : 420,681,318.93 = 176,641,346.70 : x
  2. Step 2: Convert to fraction form
    280,391,919.57/420,681,318.93 = 176,641,346.70/x
  3. Step 3: Cross multiply
    280,391,919.57x = 420,681,318.93 × 176,641,346.70
  4. Step 4: Simplify right side
    280,391,919.57x = 74,309,714,707,327,392
  5. Step 5: Solve for x
    x = 74,309,714,707,327,392/280,391,919.57
  6. Step 6: Final answer
    x = 265,020,885.13

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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.