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Finding the Fourth Proportional to 325,136.40, 487,510.20 and 167,672.40

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Solution

The fourth proportional to 325,136.40, 487,510.20 and 167,672.40 is: 251,408.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,136.40 : 487,510.20 = 167,672.40 : x
  2. Step 2: Convert to fraction form
    325,136.40/487,510.20 = 167,672.40/x
  3. Step 3: Cross multiply
    325,136.40x = 487,510.20 × 167,672.40
  4. Step 4: Simplify right side
    325,136.40x = 81,742,005,258.48
  5. Step 5: Solve for x
    x = 81,742,005,258.48/325,136.40
  6. Step 6: Final answer
    x = 251,408.35

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1.5x scale

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.