Home / 278,508,838.20-384,351,411.47-153,065,480.56

Finding the Fourth Proportional to 278,508,838.20, 384,351,411.47 and 153,065,480.56

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Solution

The fourth proportional to 278,508,838.20, 384,351,411.47 and 153,065,480.56 is: 211,235,427.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,508,838.20 : 384,351,411.47 = 153,065,480.56 : x
  2. Step 2: Convert to fraction form
    278,508,838.20/384,351,411.47 = 153,065,480.56/x
  3. Step 3: Cross multiply
    278,508,838.20x = 384,351,411.47 × 153,065,480.56
  4. Step 4: Simplify right side
    278,508,838.20x = 58,830,933,500,569,848
  5. Step 5: Solve for x
    x = 58,830,933,500,569,848/278,508,838.20
  6. Step 6: Final answer
    x = 211,235,427.50

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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.