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Finding the Fourth Proportional to 374,435.40, 561,653.10 and 208,223.40

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Solution

The fourth proportional to 374,435.40, 561,653.10 and 208,223.40 is: 312,335.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    374,435.40 : 561,653.10 = 208,223.40 : x
  2. Step 2: Convert to fraction form
    374,435.40/561,653.10 = 208,223.40/x
  3. Step 3: Cross multiply
    374,435.40x = 561,653.10 × 208,223.40
  4. Step 4: Simplify right side
    374,435.40x = 116,949,318,102.54
  5. Step 5: Solve for x
    x = 116,949,318,102.54/374,435.40
  6. Step 6: Final answer
    x = 312,335.10

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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.