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Finding the Fourth Proportional to 377,777.58, 521,344.53 and 208,017.78

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Solution

The fourth proportional to 377,777.58, 521,344.53 and 208,017.78 is: 287,070.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    377,777.58 : 521,344.53 = 208,017.78 : x
  2. Step 2: Convert to fraction form
    377,777.58/521,344.53 = 208,017.78/x
  3. Step 3: Cross multiply
    377,777.58x = 521,344.53 × 208,017.78
  4. Step 4: Simplify right side
    377,777.58x = 108,448,931,745.74
  5. Step 5: Solve for x
    x = 108,448,931,745.74/377,777.58
  6. Step 6: Final answer
    x = 287,070.85

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1.5x scale

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.