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Finding the Fourth Proportional to 171,155.20, 256,041.60 and 148,038.40

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Solution

The fourth proportional to 171,155.20, 256,041.60 and 148,038.40 is: 221,459.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,155.20 : 256,041.60 = 148,038.40 : x
  2. Step 2: Convert to fraction form
    171,155.20/256,041.60 = 148,038.40/x
  3. Step 3: Cross multiply
    171,155.20x = 256,041.60 × 148,038.40
  4. Step 4: Simplify right side
    171,155.20x = 37,903,988,797.44
  5. Step 5: Solve for x
    x = 37,903,988,797.44/171,155.20
  6. Step 6: Final answer
    x = 221,459.76

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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.