Home / 287,415,633.15-431,117,245.43-80,148,522.84

Finding the Fourth Proportional to 287,415,633.15, 431,117,245.43 and 80,148,522.84

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Solution

The fourth proportional to 287,415,633.15, 431,117,245.43 and 80,148,522.84 is: 120,221,054.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,415,633.15 : 431,117,245.43 = 80,148,522.84 : x
  2. Step 2: Convert to fraction form
    287,415,633.15/431,117,245.43 = 80,148,522.84/x
  3. Step 3: Cross multiply
    287,415,633.15x = 431,117,245.43 × 80,148,522.84
  4. Step 4: Simplify right side
    287,415,633.15x = 34,553,410,390,347,368
  5. Step 5: Solve for x
    x = 34,553,410,390,347,368/287,415,633.15
  6. Step 6: Final answer
    x = 120,221,054.13

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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.