Home / 389,729,145.60-537,826,219.20-215,888,889.60

Finding the Fourth Proportional to 389,729,145.60, 537,826,219.20 and 215,888,889.60

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Solution

The fourth proportional to 389,729,145.60, 537,826,219.20 and 215,888,889.60 is: 297,926,666.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,729,145.60 : 537,826,219.20 = 215,888,889.60 : x
  2. Step 2: Convert to fraction form
    389,729,145.60/537,826,219.20 = 215,888,889.60/x
  3. Step 3: Cross multiply
    389,729,145.60x = 537,826,219.20 × 215,888,889.60
  4. Step 4: Simplify right side
    389,729,145.60x = 116,110,705,260,854,208
  5. Step 5: Solve for x
    x = 116,110,705,260,854,208/389,729,145.60
  6. Step 6: Final answer
    x = 297,926,666.69

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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.