Home / 287,609,072.30-431,413,608.46-199,602,442.70

Finding the Fourth Proportional to 287,609,072.30, 431,413,608.46 and 199,602,442.70

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Solution

The fourth proportional to 287,609,072.30, 431,413,608.46 and 199,602,442.70 is: 299,403,664.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,609,072.30 : 431,413,608.46 = 199,602,442.70 : x
  2. Step 2: Convert to fraction form
    287,609,072.30/431,413,608.46 = 199,602,442.70/x
  3. Step 3: Cross multiply
    287,609,072.30x = 431,413,608.46 × 199,602,442.70
  4. Step 4: Simplify right side
    287,609,072.30x = 86,111,210,062,637,376
  5. Step 5: Solve for x
    x = 86,111,210,062,637,376/287,609,072.30
  6. Step 6: Final answer
    x = 299,403,664.06

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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.