Home / 389,964,931.20-584,947,361.28-171,615,273.21

Finding the Fourth Proportional to 389,964,931.20, 584,947,361.28 and 171,615,273.21

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Solution

The fourth proportional to 389,964,931.20, 584,947,361.28 and 171,615,273.21 is: 257,422,894.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,964,931.20 : 584,947,361.28 = 171,615,273.21 : x
  2. Step 2: Convert to fraction form
    389,964,931.20/584,947,361.28 = 171,615,273.21/x
  3. Step 3: Cross multiply
    389,964,931.20x = 584,947,361.28 × 171,615,273.21
  4. Step 4: Simplify right side
    389,964,931.20x = 100,385,901,219,535,776
  5. Step 5: Solve for x
    x = 100,385,901,219,535,776/389,964,931.20
  6. Step 6: Final answer
    x = 257,422,894.18

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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.