Home / 398,455,206.29-549,870,094.37-219,839,085.53

Finding the Fourth Proportional to 398,455,206.29, 549,870,094.37 and 219,839,085.53

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Solution

The fourth proportional to 398,455,206.29, 549,870,094.37 and 219,839,085.53 is: 303,378,991.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,455,206.29 : 549,870,094.37 = 219,839,085.53 : x
  2. Step 2: Convert to fraction form
    398,455,206.29/549,870,094.37 = 219,839,085.53/x
  3. Step 3: Cross multiply
    398,455,206.29x = 549,870,094.37 × 219,839,085.53
  4. Step 4: Simplify right side
    398,455,206.29x = 120,882,938,705,496,416
  5. Step 5: Solve for x
    x = 120,882,938,705,496,416/398,455,206.29
  6. Step 6: Final answer
    x = 303,378,991.66

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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.