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Finding the Fourth Proportional to 258,807.60, 356,256.36 and 223,115.76

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Solution

The fourth proportional to 258,807.60, 356,256.36 and 223,115.76 is: 307,125.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,807.60 : 356,256.36 = 223,115.76 : x
  2. Step 2: Convert to fraction form
    258,807.60/356,256.36 = 223,115.76/x
  3. Step 3: Cross multiply
    258,807.60x = 356,256.36 × 223,115.76
  4. Step 4: Simplify right side
    258,807.60x = 79,486,408,516.23
  5. Step 5: Solve for x
    x = 79,486,408,516.23/258,807.60
  6. Step 6: Final answer
    x = 307,125.48

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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.