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Finding the Fourth Proportional to 423,365.80, 634,011.90 and 201,490.60

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Solution

The fourth proportional to 423,365.80, 634,011.90 and 201,490.60 is: 301,742.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,365.80 : 634,011.90 = 201,490.60 : x
  2. Step 2: Convert to fraction form
    423,365.80/634,011.90 = 201,490.60/x
  3. Step 3: Cross multiply
    423,365.80x = 634,011.90 × 201,490.60
  4. Step 4: Simplify right side
    423,365.80x = 127,747,438,138.14
  5. Step 5: Solve for x
    x = 127,747,438,138.14/423,365.80
  6. Step 6: Final answer
    x = 301,742.46

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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.