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Finding the Fourth Proportional to 539,199.92, 808,820.48 and 139,830.24

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Solution

The fourth proportional to 539,199.92, 808,820.48 and 139,830.24 is: 209,750.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,199.92 : 808,820.48 = 139,830.24 : x
  2. Step 2: Convert to fraction form
    539,199.92/808,820.48 = 139,830.24/x
  3. Step 3: Cross multiply
    539,199.92x = 808,820.48 × 139,830.24
  4. Step 4: Simplify right side
    539,199.92x = 113,097,561,835.32
  5. Step 5: Solve for x
    x = 113,097,561,835.32/539,199.92
  6. Step 6: Final answer
    x = 209,750.70

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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.