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Finding the Fourth Proportional to 315,501.20, 473,251.80 and 289,696.40

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Solution

The fourth proportional to 315,501.20, 473,251.80 and 289,696.40 is: 434,544.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,501.20 : 473,251.80 = 289,696.40 : x
  2. Step 2: Convert to fraction form
    315,501.20/473,251.80 = 289,696.40/x
  3. Step 3: Cross multiply
    315,501.20x = 473,251.80 × 289,696.40
  4. Step 4: Simplify right side
    315,501.20x = 137,099,342,753.52
  5. Step 5: Solve for x
    x = 137,099,342,753.52/315,501.20
  6. Step 6: Final answer
    x = 434,544.60

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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.