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Finding the Fourth Proportional to 355,810.60, 533,715.90 and 315,375.40

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Solution

The fourth proportional to 355,810.60, 533,715.90 and 315,375.40 is: 473,063.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,810.60 : 533,715.90 = 315,375.40 : x
  2. Step 2: Convert to fraction form
    355,810.60/533,715.90 = 315,375.40/x
  3. Step 3: Cross multiply
    355,810.60x = 533,715.90 × 315,375.40
  4. Step 4: Simplify right side
    355,810.60x = 168,320,865,448.86
  5. Step 5: Solve for x
    x = 168,320,865,448.86/355,810.60
  6. Step 6: Final answer
    x = 473,063.10

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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.