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Finding the Fourth Proportional to 374,221.20, 561,331.80 and 216,368.40

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Solution

The fourth proportional to 374,221.20, 561,331.80 and 216,368.40 is: 324,552.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    374,221.20 : 561,331.80 = 216,368.40 : x
  2. Step 2: Convert to fraction form
    374,221.20/561,331.80 = 216,368.40/x
  3. Step 3: Cross multiply
    374,221.20x = 561,331.80 × 216,368.40
  4. Step 4: Simplify right side
    374,221.20x = 121,454,463,435.12
  5. Step 5: Solve for x
    x = 121,454,463,435.12/374,221.20
  6. Step 6: Final answer
    x = 324,552.60

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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.