Home / 315,935.72-471,885.97-285,903.40

Finding the Fourth Proportional to 315,935.72, 471,885.97 and 285,903.40

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Solution

The fourth proportional to 315,935.72, 471,885.97 and 285,903.40 is: 427,029.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,935.72 : 471,885.97 = 285,903.40 : x
  2. Step 2: Convert to fraction form
    315,935.72/471,885.97 = 285,903.40/x
  3. Step 3: Cross multiply
    315,935.72x = 471,885.97 × 285,903.40
  4. Step 4: Simplify right side
    315,935.72x = 134,913,803,235.30
  5. Step 5: Solve for x
    x = 134,913,803,235.30/315,935.72
  6. Step 6: Final answer
    x = 427,029.28

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.