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Finding the Fourth Proportional to 315,029.50, 434,724.90 and 179,045.50

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Solution

The fourth proportional to 315,029.50, 434,724.90 and 179,045.50 is: 247,073.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,029.50 : 434,724.90 = 179,045.50 : x
  2. Step 2: Convert to fraction form
    315,029.50/434,724.90 = 179,045.50/x
  3. Step 3: Cross multiply
    315,029.50x = 434,724.90 × 179,045.50
  4. Step 4: Simplify right side
    315,029.50x = 77,835,537,082.95
  5. Step 5: Solve for x
    x = 77,835,537,082.95/315,029.50
  6. Step 6: Final answer
    x = 247,073.80

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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.