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Finding the Fourth Proportional to 403,293.60, 604,940.40 and 278,877.60

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Solution

The fourth proportional to 403,293.60, 604,940.40 and 278,877.60 is: 418,316.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,293.60 : 604,940.40 = 278,877.60 : x
  2. Step 2: Convert to fraction form
    403,293.60/604,940.40 = 278,877.60/x
  3. Step 3: Cross multiply
    403,293.60x = 604,940.40 × 278,877.60
  4. Step 4: Simplify right side
    403,293.60x = 168,704,326,895.04
  5. Step 5: Solve for x
    x = 168,704,326,895.04/403,293.60
  6. Step 6: Final answer
    x = 418,316.40

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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.