Home / 389,247,385.84-537,162,815.52-210,631,275.04

Finding the Fourth Proportional to 389,247,385.84, 537,162,815.52 and 210,631,275.04

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Solution

The fourth proportional to 389,247,385.84, 537,162,815.52 and 210,631,275.04 is: 290,671,929.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,247,385.84 : 537,162,815.52 = 210,631,275.04 : x
  2. Step 2: Convert to fraction form
    389,247,385.84/537,162,815.52 = 210,631,275.04/x
  3. Step 3: Cross multiply
    389,247,385.84x = 537,162,815.52 × 210,631,275.04
  4. Step 4: Simplify right side
    389,247,385.84x = 113,143,288,737,053,888
  5. Step 5: Solve for x
    x = 113,143,288,737,053,888/389,247,385.84
  6. Step 6: Final answer
    x = 290,671,929.61

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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.