Home / 407,992,159.32-612,168,535.26-213,857,155.68

Finding the Fourth Proportional to 407,992,159.32, 612,168,535.26 and 213,857,155.68

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Solution

The fourth proportional to 407,992,159.32, 612,168,535.26 and 213,857,155.68 is: 320,880,239.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    407,992,159.32 : 612,168,535.26 = 213,857,155.68 : x
  2. Step 2: Convert to fraction form
    407,992,159.32/612,168,535.26 = 213,857,155.68/x
  3. Step 3: Cross multiply
    407,992,159.32x = 612,168,535.26 × 213,857,155.68
  4. Step 4: Simplify right side
    407,992,159.32x = 130,916,621,747,495,392
  5. Step 5: Solve for x
    x = 130,916,621,747,495,392/407,992,159.32
  6. Step 6: Final answer
    x = 320,880,239.38

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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.