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Finding the Fourth Proportional to 384,311.48, 530,506.16 and 248,356.62

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Solution

The fourth proportional to 384,311.48, 530,506.16 and 248,356.62 is: 342,833.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,311.48 : 530,506.16 = 248,356.62 : x
  2. Step 2: Convert to fraction form
    384,311.48/530,506.16 = 248,356.62/x
  3. Step 3: Cross multiply
    384,311.48x = 530,506.16 × 248,356.62
  4. Step 4: Simplify right side
    384,311.48x = 131,754,715,545.00
  5. Step 5: Solve for x
    x = 131,754,715,545.00/384,311.48
  6. Step 6: Final answer
    x = 342,833.16

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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.