Home / 265,611,385.20-398,417,077.80-210,128,944.80

Finding the Fourth Proportional to 265,611,385.20, 398,417,077.80 and 210,128,944.80

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Solution

The fourth proportional to 265,611,385.20, 398,417,077.80 and 210,128,944.80 is: 315,193,417.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,611,385.20 : 398,417,077.80 = 210,128,944.80 : x
  2. Step 2: Convert to fraction form
    265,611,385.20/398,417,077.80 = 210,128,944.80/x
  3. Step 3: Cross multiply
    265,611,385.20x = 398,417,077.80 × 210,128,944.80
  4. Step 4: Simplify right side
    265,611,385.20x = 83,718,960,148,413,520
  5. Step 5: Solve for x
    x = 83,718,960,148,413,520/265,611,385.20
  6. Step 6: Final answer
    x = 315,193,417.20

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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.