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Finding the Fourth Proportional to 315,337.20, 473,005.80 and 289,532.40

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Solution

The fourth proportional to 315,337.20, 473,005.80 and 289,532.40 is: 434,298.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,337.20 : 473,005.80 = 289,532.40 : x
  2. Step 2: Convert to fraction form
    315,337.20/473,005.80 = 289,532.40/x
  3. Step 3: Cross multiply
    315,337.20x = 473,005.80 × 289,532.40
  4. Step 4: Simplify right side
    315,337.20x = 136,950,504,487.92
  5. Step 5: Solve for x
    x = 136,950,504,487.92/315,337.20
  6. Step 6: Final answer
    x = 434,298.60

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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.