Home / 431,510.99-647,384.03-131,984.93

Finding the Fourth Proportional to 431,510.99, 647,384.03 and 131,984.93

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Solution

The fourth proportional to 431,510.99, 647,384.03 and 131,984.93 is: 198,013.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,510.99 : 647,384.03 = 131,984.93 : x
  2. Step 2: Convert to fraction form
    431,510.99/647,384.03 = 131,984.93/x
  3. Step 3: Cross multiply
    431,510.99x = 647,384.03 × 131,984.93
  4. Step 4: Simplify right side
    431,510.99x = 85,444,931,985.82
  5. Step 5: Solve for x
    x = 85,444,931,985.82/431,510.99
  6. Step 6: Final answer
    x = 198,013.34

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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.