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Finding the Fourth Proportional to 374,479.60, 561,719.40 and 330,156.40

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Solution

The fourth proportional to 374,479.60, 561,719.40 and 330,156.40 is: 495,234.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    374,479.60 : 561,719.40 = 330,156.40 : x
  2. Step 2: Convert to fraction form
    374,479.60/561,719.40 = 330,156.40/x
  3. Step 3: Cross multiply
    374,479.60x = 561,719.40 × 330,156.40
  4. Step 4: Simplify right side
    374,479.60x = 185,455,254,914.16
  5. Step 5: Solve for x
    x = 185,455,254,914.16/374,479.60
  6. Step 6: Final answer
    x = 495,234.60

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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.