Home / 385,901,433.52-532,542,818.89-209,689,966.51

Finding the Fourth Proportional to 385,901,433.52, 532,542,818.89 and 209,689,966.51

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Solution

The fourth proportional to 385,901,433.52, 532,542,818.89 and 209,689,966.51 is: 289,371,523.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,901,433.52 : 532,542,818.89 = 209,689,966.51 : x
  2. Step 2: Convert to fraction form
    385,901,433.52/532,542,818.89 = 209,689,966.51/x
  3. Step 3: Cross multiply
    385,901,433.52x = 532,542,818.89 × 209,689,966.51
  4. Step 4: Simplify right side
    385,901,433.52x = 111,668,885,858,185,088
  5. Step 5: Solve for x
    x = 111,668,885,858,185,088/385,901,433.52
  6. Step 6: Final answer
    x = 289,371,523.81

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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.