Home / 280,965,697.25-387,724,244.78-155,523,035

Finding the Fourth Proportional to 280,965,697.25, 387,724,244.78 and 155,523,035

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Solution

The fourth proportional to 280,965,697.25, 387,724,244.78 and 155,523,035 is: 214,617,129.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,965,697.25 : 387,724,244.78 = 155,523,035 : x
  2. Step 2: Convert to fraction form
    280,965,697.25/387,724,244.78 = 155,523,035/x
  3. Step 3: Cross multiply
    280,965,697.25x = 387,724,244.78 × 155,523,035
  4. Step 4: Simplify right side
    280,965,697.25x = 60,300,051,291,268,504
  5. Step 5: Solve for x
    x = 60,300,051,291,268,504/280,965,697.25
  6. Step 6: Final answer
    x = 214,617,129.00

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.