Home / 287,887,938.04-397,285,082.96-155,728,629.64

Finding the Fourth Proportional to 287,887,938.04, 397,285,082.96 and 155,728,629.64

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Solution

The fourth proportional to 287,887,938.04, 397,285,082.96 and 155,728,629.64 is: 214,905,362.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,887,938.04 : 397,285,082.96 = 155,728,629.64 : x
  2. Step 2: Convert to fraction form
    287,887,938.04/397,285,082.96 = 155,728,629.64/x
  3. Step 3: Cross multiply
    287,887,938.04x = 397,285,082.96 × 155,728,629.64
  4. Step 4: Simplify right side
    287,887,938.04x = 61,868,661,546,367,680
  5. Step 5: Solve for x
    x = 61,868,661,546,367,680/287,887,938.04
  6. Step 6: Final answer
    x = 214,905,362.02

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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.