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Finding the Fourth Proportional to 162,435.30, 243,652.95 and 155,436.90

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Solution

The fourth proportional to 162,435.30, 243,652.95 and 155,436.90 is: 233,155.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    162,435.30 : 243,652.95 = 155,436.90 : x
  2. Step 2: Convert to fraction form
    162,435.30/243,652.95 = 155,436.90/x
  3. Step 3: Cross multiply
    162,435.30x = 243,652.95 × 155,436.90
  4. Step 4: Simplify right side
    162,435.30x = 37,872,659,223.86
  5. Step 5: Solve for x
    x = 37,872,659,223.86/162,435.30
  6. Step 6: Final answer
    x = 233,155.35

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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.