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Finding the Fourth Proportional to 488,386.30, 732,688.80 and 188,840.20

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Solution

The fourth proportional to 488,386.30, 732,688.80 and 188,840.20 is: 283,302.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    488,386.30 : 732,688.80 = 188,840.20 : x
  2. Step 2: Convert to fraction form
    488,386.30/732,688.80 = 188,840.20/x
  3. Step 3: Cross multiply
    488,386.30x = 732,688.80 × 188,840.20
  4. Step 4: Simplify right side
    488,386.30x = 138,361,099,529.76
  5. Step 5: Solve for x
    x = 138,361,099,529.76/488,386.30
  6. Step 6: Final answer
    x = 283,302.58

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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.