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Finding the Fourth Proportional to 423,412.67, 634,288.61 and 245,546.01

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Solution

The fourth proportional to 423,412.67, 634,288.61 and 245,546.01 is: 367,837.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,412.67 : 634,288.61 = 245,546.01 : x
  2. Step 2: Convert to fraction form
    423,412.67/634,288.61 = 245,546.01/x
  3. Step 3: Cross multiply
    423,412.67x = 634,288.61 × 245,546.01
  4. Step 4: Simplify right side
    423,412.67x = 155,747,037,987.81
  5. Step 5: Solve for x
    x = 155,747,037,987.81/423,412.67
  6. Step 6: Final answer
    x = 367,837.45

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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.