Home / 287,440,190.38-431,163,707.03-80,165,989.93

Finding the Fourth Proportional to 287,440,190.38, 431,163,707.03 and 80,165,989.93

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Solution

The fourth proportional to 287,440,190.38, 431,163,707.03 and 80,165,989.93 is: 120,249,939.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,440,190.38 : 431,163,707.03 = 80,165,989.93 : x
  2. Step 2: Convert to fraction form
    287,440,190.38/431,163,707.03 = 80,165,989.93/x
  3. Step 3: Cross multiply
    287,440,190.38x = 431,163,707.03 × 80,165,989.93
  4. Step 4: Simplify right side
    287,440,190.38x = 34,564,665,395,578,764
  5. Step 5: Solve for x
    x = 34,564,665,395,578,764/287,440,190.38
  6. Step 6: Final answer
    x = 120,249,939.13

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.