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Finding the Fourth Proportional to 162,021.40, 243,032.10 and 155,460.40

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Solution

The fourth proportional to 162,021.40, 243,032.10 and 155,460.40 is: 233,190.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    162,021.40 : 243,032.10 = 155,460.40 : x
  2. Step 2: Convert to fraction form
    162,021.40/243,032.10 = 155,460.40/x
  3. Step 3: Cross multiply
    162,021.40x = 243,032.10 × 155,460.40
  4. Step 4: Simplify right side
    162,021.40x = 37,781,867,478.84
  5. Step 5: Solve for x
    x = 37,781,867,478.84/162,021.40
  6. Step 6: Final answer
    x = 233,190.60

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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.