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Finding the Fourth Proportional to 374,155.20, 561,305.70 and 149,477.40

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Solution

The fourth proportional to 374,155.20, 561,305.70 and 149,477.40 is: 224,245.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    374,155.20 : 561,305.70 = 149,477.40 : x
  2. Step 2: Convert to fraction form
    374,155.20/561,305.70 = 149,477.40/x
  3. Step 3: Cross multiply
    374,155.20x = 561,305.70 × 149,477.40
  4. Step 4: Simplify right side
    374,155.20x = 83,902,516,641.18
  5. Step 5: Solve for x
    x = 83,902,516,641.18/374,155.20
  6. Step 6: Final answer
    x = 224,245.22

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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.