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Finding the Fourth Proportional to 539,199.88, 808,820.48 and 139,830.20

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Solution

The fourth proportional to 539,199.88, 808,820.48 and 139,830.20 is: 209,750.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,199.88 : 808,820.48 = 139,830.20 : x
  2. Step 2: Convert to fraction form
    539,199.88/808,820.48 = 139,830.20/x
  3. Step 3: Cross multiply
    539,199.88x = 808,820.48 × 139,830.20
  4. Step 4: Simplify right side
    539,199.88x = 113,097,529,482.50
  5. Step 5: Solve for x
    x = 113,097,529,482.50/539,199.88
  6. Step 6: Final answer
    x = 209,750.66

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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.