Home / 398,455,170.77-549,870,045.47-219,839,050.08

Finding the Fourth Proportional to 398,455,170.77, 549,870,045.47 and 219,839,050.08

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Solution

The fourth proportional to 398,455,170.77, 549,870,045.47 and 219,839,050.08 is: 303,378,942.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,455,170.77 : 549,870,045.47 = 219,839,050.08 : x
  2. Step 2: Convert to fraction form
    398,455,170.77/549,870,045.47 = 219,839,050.08/x
  3. Step 3: Cross multiply
    398,455,170.77x = 549,870,045.47 × 219,839,050.08
  4. Step 4: Simplify right side
    398,455,170.77x = 120,882,908,462,472,032
  5. Step 5: Solve for x
    x = 120,882,908,462,472,032/398,455,170.77
  6. Step 6: Final answer
    x = 303,378,942.81

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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.