Home / 287,221,288.50-430,831,942.47-71,810,536.50

Finding the Fourth Proportional to 287,221,288.50, 430,831,942.47 and 71,810,536.50

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Solution

The fourth proportional to 287,221,288.50, 430,831,942.47 and 71,810,536.50 is: 107,715,807.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,221,288.50 : 430,831,942.47 = 71,810,536.50 : x
  2. Step 2: Convert to fraction form
    287,221,288.50/430,831,942.47 = 71,810,536.50/x
  3. Step 3: Cross multiply
    287,221,288.50x = 430,831,942.47 × 71,810,536.50
  4. Step 4: Simplify right side
    287,221,288.50x = 30,938,272,930,107,836
  5. Step 5: Solve for x
    x = 30,938,272,930,107,836/287,221,288.50
  6. Step 6: Final answer
    x = 107,715,807.18

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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.