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Finding the Fourth Proportional to 318,510.80, 477,737.40 and 108,155.60

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Solution

The fourth proportional to 318,510.80, 477,737.40 and 108,155.60 is: 162,223.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,510.80 : 477,737.40 = 108,155.60 : x
  2. Step 2: Convert to fraction form
    318,510.80/477,737.40 = 108,155.60/x
  3. Step 3: Cross multiply
    318,510.80x = 477,737.40 × 108,155.60
  4. Step 4: Simplify right side
    318,510.80x = 51,669,975,139.44
  5. Step 5: Solve for x
    x = 51,669,975,139.44/318,510.80
  6. Step 6: Final answer
    x = 162,223.62

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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.