Home / 423,031-634,484.04-123,431.17

Finding the Fourth Proportional to 423,031, 634,484.04 and 123,431.17

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Solution

The fourth proportional to 423,031, 634,484.04 and 123,431.17 is: 185,128.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,031 : 634,484.04 = 123,431.17 : x
  2. Step 2: Convert to fraction form
    423,031/634,484.04 = 123,431.17/x
  3. Step 3: Cross multiply
    423,031x = 634,484.04 × 123,431.17
  4. Step 4: Simplify right side
    423,031x = 78,315,107,403.53
  5. Step 5: Solve for x
    x = 78,315,107,403.53/423,031
  6. Step 6: Final answer
    x = 185,128.53

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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.