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Finding the Fourth Proportional to 254,455.80, 381,683.70 and 147,730.20

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Solution

The fourth proportional to 254,455.80, 381,683.70 and 147,730.20 is: 221,595.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    254,455.80 : 381,683.70 = 147,730.20 : x
  2. Step 2: Convert to fraction form
    254,455.80/381,683.70 = 147,730.20/x
  3. Step 3: Cross multiply
    254,455.80x = 381,683.70 × 147,730.20
  4. Step 4: Simplify right side
    254,455.80x = 56,386,209,337.74
  5. Step 5: Solve for x
    x = 56,386,209,337.74/254,455.80
  6. Step 6: Final answer
    x = 221,595.30

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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.