Home / 388,052,727.92-535,514,939.65-220,788,985.09

Finding the Fourth Proportional to 388,052,727.92, 535,514,939.65 and 220,788,985.09

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Solution

The fourth proportional to 388,052,727.92, 535,514,939.65 and 220,788,985.09 is: 304,690,037.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,052,727.92 : 535,514,939.65 = 220,788,985.09 : x
  2. Step 2: Convert to fraction form
    388,052,727.92/535,514,939.65 = 220,788,985.09/x
  3. Step 3: Cross multiply
    388,052,727.92x = 535,514,939.65 × 220,788,985.09
  4. Step 4: Simplify right side
    388,052,727.92x = 118,235,800,025,794,720
  5. Step 5: Solve for x
    x = 118,235,800,025,794,720/388,052,727.92
  6. Step 6: Final answer
    x = 304,690,037.00

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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.