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Finding the Fourth Proportional to 283,064.76, 390,635.33 and 155,740.59

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Solution

The fourth proportional to 283,064.76, 390,635.33 and 155,740.59 is: 214,925.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,064.76 : 390,635.33 = 155,740.59 : x
  2. Step 2: Convert to fraction form
    283,064.76/390,635.33 = 155,740.59/x
  3. Step 3: Cross multiply
    283,064.76x = 390,635.33 × 155,740.59
  4. Step 4: Simplify right side
    283,064.76x = 60,837,775,990.34
  5. Step 5: Solve for x
    x = 60,837,775,990.34/283,064.76
  6. Step 6: Final answer
    x = 214,925.29

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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.