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Finding the Fourth Proportional to 402,646.60, 603,278.70 and 191,830.60

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Solution

The fourth proportional to 402,646.60, 603,278.70 and 191,830.60 is: 287,416.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,646.60 : 603,278.70 = 191,830.60 : x
  2. Step 2: Convert to fraction form
    402,646.60/603,278.70 = 191,830.60/x
  3. Step 3: Cross multiply
    402,646.60x = 603,278.70 × 191,830.60
  4. Step 4: Simplify right side
    402,646.60x = 115,727,314,988.22
  5. Step 5: Solve for x
    x = 115,727,314,988.22/402,646.60
  6. Step 6: Final answer
    x = 287,416.60

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.