Home / 318,639.36-439,708.16-175,408.64

Finding the Fourth Proportional to 318,639.36, 439,708.16 and 175,408.64

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Solution

The fourth proportional to 318,639.36, 439,708.16 and 175,408.64 is: 242,056.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,639.36 : 439,708.16 = 175,408.64 : x
  2. Step 2: Convert to fraction form
    318,639.36/439,708.16 = 175,408.64/x
  3. Step 3: Cross multiply
    318,639.36x = 439,708.16 × 175,408.64
  4. Step 4: Simplify right side
    318,639.36x = 77,128,610,342.50
  5. Step 5: Solve for x
    x = 77,128,610,342.50/318,639.36
  6. Step 6: Final answer
    x = 242,056.13

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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.