Home / 287,521,942.60-430,988,981.10-141,731,273.80

Finding the Fourth Proportional to 287,521,942.60, 430,988,981.10 and 141,731,273.80

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Solution

The fourth proportional to 287,521,942.60, 430,988,981.10 and 141,731,273.80 is: 212,452,019.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,521,942.60 : 430,988,981.10 = 141,731,273.80 : x
  2. Step 2: Convert to fraction form
    287,521,942.60/430,988,981.10 = 141,731,273.80/x
  3. Step 3: Cross multiply
    287,521,942.60x = 430,988,981.10 × 141,731,273.80
  4. Step 4: Simplify right side
    287,521,942.60x = 61,084,617,285,067,136
  5. Step 5: Solve for x
    x = 61,084,617,285,067,136/287,521,942.60
  6. Step 6: Final answer
    x = 212,452,019.25

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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.