Home / 278,836,111.55-384,791,707.14-153,385,607.09

Finding the Fourth Proportional to 278,836,111.55, 384,791,707.14 and 153,385,607.09

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Solution

The fourth proportional to 278,836,111.55, 384,791,707.14 and 153,385,607.09 is: 211,670,967.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,836,111.55 : 384,791,707.14 = 153,385,607.09 : x
  2. Step 2: Convert to fraction form
    278,836,111.55/384,791,707.14 = 153,385,607.09/x
  3. Step 3: Cross multiply
    278,836,111.55x = 384,791,707.14 × 153,385,607.09
  4. Step 4: Simplify right side
    278,836,111.55x = 59,021,509,600,942,432
  5. Step 5: Solve for x
    x = 59,021,509,600,942,432/278,836,111.55
  6. Step 6: Final answer
    x = 211,670,967.85

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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.