Home / 280,838,957.10-420,975,000.45-127,594,992.30

Finding the Fourth Proportional to 280,838,957.10, 420,975,000.45 and 127,594,992.30

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Solution

The fourth proportional to 280,838,957.10, 420,975,000.45 and 127,594,992.30 is: 191,263,713.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,838,957.10 : 420,975,000.45 = 127,594,992.30 : x
  2. Step 2: Convert to fraction form
    280,838,957.10/420,975,000.45 = 127,594,992.30/x
  3. Step 3: Cross multiply
    280,838,957.10x = 420,975,000.45 × 127,594,992.30
  4. Step 4: Simplify right side
    280,838,957.10x = 53,714,301,940,910,240
  5. Step 5: Solve for x
    x = 53,714,301,940,910,240/280,838,957.10
  6. Step 6: Final answer
    x = 191,263,713.89

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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.