Home / 407,992,158.82-612,168,534.51-213,857,155.18

Finding the Fourth Proportional to 407,992,158.82, 612,168,534.51 and 213,857,155.18

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Solution

The fourth proportional to 407,992,158.82, 612,168,534.51 and 213,857,155.18 is: 320,880,238.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    407,992,158.82 : 612,168,534.51 = 213,857,155.18 : x
  2. Step 2: Convert to fraction form
    407,992,158.82/612,168,534.51 = 213,857,155.18/x
  3. Step 3: Cross multiply
    407,992,158.82x = 612,168,534.51 × 213,857,155.18
  4. Step 4: Simplify right side
    407,992,158.82x = 130,916,621,281,018,256
  5. Step 5: Solve for x
    x = 130,916,621,281,018,256/407,992,158.82
  6. Step 6: Final answer
    x = 320,880,238.63

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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.