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Finding the Fourth Proportional to 374,447.20, 561,670.80 and 355,201.60

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Solution

The fourth proportional to 374,447.20, 561,670.80 and 355,201.60 is: 532,802.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    374,447.20 : 561,670.80 = 355,201.60 : x
  2. Step 2: Convert to fraction form
    374,447.20/561,670.80 = 355,201.60/x
  3. Step 3: Cross multiply
    374,447.20x = 561,670.80 × 355,201.60
  4. Step 4: Simplify right side
    374,447.20x = 199,506,366,833.28
  5. Step 5: Solve for x
    x = 199,506,366,833.28/374,447.20
  6. Step 6: Final answer
    x = 532,802.40

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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.