Home / 296,835.16-445,257.60-86,484.64

Finding the Fourth Proportional to 296,835.16, 445,257.60 and 86,484.64

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Solution

The fourth proportional to 296,835.16, 445,257.60 and 86,484.64 is: 129,728.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    296,835.16 : 445,257.60 = 86,484.64 : x
  2. Step 2: Convert to fraction form
    296,835.16/445,257.60 = 86,484.64/x
  3. Step 3: Cross multiply
    296,835.16x = 445,257.60 × 86,484.64
  4. Step 4: Simplify right side
    296,835.16x = 38,507,943,243.26
  5. Step 5: Solve for x
    x = 38,507,943,243.26/296,835.16
  6. Step 6: Final answer
    x = 129,728.38

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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.