Home / 314,945.18-472,417.16-78,288.08

Finding the Fourth Proportional to 314,945.18, 472,417.16 and 78,288.08

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Solution

The fourth proportional to 314,945.18, 472,417.16 and 78,288.08 is: 117,431.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    314,945.18 : 472,417.16 = 78,288.08 : x
  2. Step 2: Convert to fraction form
    314,945.18/472,417.16 = 78,288.08/x
  3. Step 3: Cross multiply
    314,945.18x = 472,417.16 × 78,288.08
  4. Step 4: Simplify right side
    314,945.18x = 36,984,633,205.06
  5. Step 5: Solve for x
    x = 36,984,633,205.06/314,945.18
  6. Step 6: Final answer
    x = 117,431.97

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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.