Home / 280,932,140.52-420,558,629.40-169,931,889.72

Finding the Fourth Proportional to 280,932,140.52, 420,558,629.40 and 169,931,889.72

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Solution

The fourth proportional to 280,932,140.52, 420,558,629.40 and 169,931,889.72 is: 254,389,983.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,932,140.52 : 420,558,629.40 = 169,931,889.72 : x
  2. Step 2: Convert to fraction form
    280,932,140.52/420,558,629.40 = 169,931,889.72/x
  3. Step 3: Cross multiply
    280,932,140.52x = 420,558,629.40 × 169,931,889.72
  4. Step 4: Simplify right side
    280,932,140.52x = 71,466,322,631,995,144
  5. Step 5: Solve for x
    x = 71,466,322,631,995,144/280,932,140.52
  6. Step 6: Final answer
    x = 254,389,983.64

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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.