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Finding the Fourth Proportional to 488,265.90, 731,961.45 and 319,866.90

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Solution

The fourth proportional to 488,265.90, 731,961.45 and 319,866.90 is: 479,513.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    488,265.90 : 731,961.45 = 319,866.90 : x
  2. Step 2: Convert to fraction form
    488,265.90/731,961.45 = 319,866.90/x
  3. Step 3: Cross multiply
    488,265.90x = 731,961.45 × 319,866.90
  4. Step 4: Simplify right side
    488,265.90x = 234,130,239,931.01
  5. Step 5: Solve for x
    x = 234,130,239,931.01/488,265.90
  6. Step 6: Final answer
    x = 479,513.81

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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.