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Finding the Fourth Proportional to 312,277.80, 468,368.10 and 87,616.20

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Solution

The fourth proportional to 312,277.80, 468,368.10 and 87,616.20 is: 131,410.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,277.80 : 468,368.10 = 87,616.20 : x
  2. Step 2: Convert to fraction form
    312,277.80/468,368.10 = 87,616.20/x
  3. Step 3: Cross multiply
    312,277.80x = 468,368.10 × 87,616.20
  4. Step 4: Simplify right side
    312,277.80x = 41,036,633,123.22
  5. Step 5: Solve for x
    x = 41,036,633,123.22/312,277.80
  6. Step 6: Final answer
    x = 131,410.66

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1.5x scale

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.