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Finding the Fourth Proportional to 283,051.33, 390,605.29 and 155,729.05

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Solution

The fourth proportional to 283,051.33, 390,605.29 and 155,729.05 is: 214,903.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,051.33 : 390,605.29 = 155,729.05 : x
  2. Step 2: Convert to fraction form
    283,051.33/390,605.29 = 155,729.05/x
  3. Step 3: Cross multiply
    283,051.33x = 390,605.29 × 155,729.05
  4. Step 4: Simplify right side
    283,051.33x = 60,828,590,736.67
  5. Step 5: Solve for x
    x = 60,828,590,736.67/283,051.33
  6. Step 6: Final answer
    x = 214,903.04

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.