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Finding the Fourth Proportional to 374,443.60, 561,665.40 and 108,212.80

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Solution

The fourth proportional to 374,443.60, 561,665.40 and 108,212.80 is: 162,319.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    374,443.60 : 561,665.40 = 108,212.80 : x
  2. Step 2: Convert to fraction form
    374,443.60/561,665.40 = 108,212.80/x
  3. Step 3: Cross multiply
    374,443.60x = 561,665.40 × 108,212.80
  4. Step 4: Simplify right side
    374,443.60x = 60,779,385,597.12
  5. Step 5: Solve for x
    x = 60,779,385,597.12/374,443.60
  6. Step 6: Final answer
    x = 162,319.20

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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.