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Finding the Fourth Proportional to 423,200.80, 634,801.20 and 367,904.80

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Solution

The fourth proportional to 423,200.80, 634,801.20 and 367,904.80 is: 551,857.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,200.80 : 634,801.20 = 367,904.80 : x
  2. Step 2: Convert to fraction form
    423,200.80/634,801.20 = 367,904.80/x
  3. Step 3: Cross multiply
    423,200.80x = 634,801.20 × 367,904.80
  4. Step 4: Simplify right side
    423,200.80x = 233,546,408,525.76
  5. Step 5: Solve for x
    x = 233,546,408,525.76/423,200.80
  6. Step 6: Final answer
    x = 551,857.20

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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.