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Finding the Fourth Proportional to 488,138.50, 732,220.80 and 155,714.50

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Solution

The fourth proportional to 488,138.50, 732,220.80 and 155,714.50 is: 233,575.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    488,138.50 : 732,220.80 = 155,714.50 : x
  2. Step 2: Convert to fraction form
    488,138.50/732,220.80 = 155,714.50/x
  3. Step 3: Cross multiply
    488,138.50x = 732,220.80 × 155,714.50
  4. Step 4: Simplify right side
    488,138.50x = 114,017,395,761.60
  5. Step 5: Solve for x
    x = 114,017,395,761.60/488,138.50
  6. Step 6: Final answer
    x = 233,575.91

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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.