Home / 307,686.35-424,607.55-171,720.29

Finding the Fourth Proportional to 307,686.35, 424,607.55 and 171,720.29

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Solution

The fourth proportional to 307,686.35, 424,607.55 and 171,720.29 is: 236,974.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,686.35 : 424,607.55 = 171,720.29 : x
  2. Step 2: Convert to fraction form
    307,686.35/424,607.55 = 171,720.29/x
  3. Step 3: Cross multiply
    307,686.35x = 424,607.55 × 171,720.29
  4. Step 4: Simplify right side
    307,686.35x = 72,913,729,499.15
  5. Step 5: Solve for x
    x = 72,913,729,499.15/307,686.35
  6. Step 6: Final answer
    x = 236,974.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.