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Finding the Fourth Proportional to 320,940, 481,421.16 and 152,373.60

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Solution

The fourth proportional to 320,940, 481,421.16 and 152,373.60 is: 228,565.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,940 : 481,421.16 = 152,373.60 : x
  2. Step 2: Convert to fraction form
    320,940/481,421.16 = 152,373.60/x
  3. Step 3: Cross multiply
    320,940x = 481,421.16 × 152,373.60
  4. Step 4: Simplify right side
    320,940x = 73,355,875,265.38
  5. Step 5: Solve for x
    x = 73,355,875,265.38/320,940
  6. Step 6: Final answer
    x = 228,565.70

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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.