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Finding the Fourth Proportional to 354,218.40, 488,807.20 and 193,070.08

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Solution

The fourth proportional to 354,218.40, 488,807.20 and 193,070.08 is: 266,428.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,218.40 : 488,807.20 = 193,070.08 : x
  2. Step 2: Convert to fraction form
    354,218.40/488,807.20 = 193,070.08/x
  3. Step 3: Cross multiply
    354,218.40x = 488,807.20 × 193,070.08
  4. Step 4: Simplify right side
    354,218.40x = 94,374,045,208.58
  5. Step 5: Solve for x
    x = 94,374,045,208.58/354,218.40
  6. Step 6: Final answer
    x = 266,428.97

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.