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Finding the Fourth Proportional to 162,000.20, 243,000.30 and 144,489.80

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Solution

The fourth proportional to 162,000.20, 243,000.30 and 144,489.80 is: 216,734.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    162,000.20 : 243,000.30 = 144,489.80 : x
  2. Step 2: Convert to fraction form
    162,000.20/243,000.30 = 144,489.80/x
  3. Step 3: Cross multiply
    162,000.20x = 243,000.30 × 144,489.80
  4. Step 4: Simplify right side
    162,000.20x = 35,111,064,746.94
  5. Step 5: Solve for x
    x = 35,111,064,746.94/162,000.20
  6. Step 6: Final answer
    x = 216,734.70

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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.