Home / 280,484,006.40-420,726,009.60-164,257,859.70

Finding the Fourth Proportional to 280,484,006.40, 420,726,009.60 and 164,257,859.70

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Solution

The fourth proportional to 280,484,006.40, 420,726,009.60 and 164,257,859.70 is: 246,386,789.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,484,006.40 : 420,726,009.60 = 164,257,859.70 : x
  2. Step 2: Convert to fraction form
    280,484,006.40/420,726,009.60 = 164,257,859.70/x
  3. Step 3: Cross multiply
    280,484,006.40x = 420,726,009.60 × 164,257,859.70
  4. Step 4: Simplify right side
    280,484,006.40x = 69,107,553,857,017,656
  5. Step 5: Solve for x
    x = 69,107,553,857,017,656/280,484,006.40
  6. Step 6: Final answer
    x = 246,386,789.55

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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.