Home / 354,327,111.40-531,490,667.10-198,721,186.60

Finding the Fourth Proportional to 354,327,111.40, 531,490,667.10 and 198,721,186.60

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Solution

The fourth proportional to 354,327,111.40, 531,490,667.10 and 198,721,186.60 is: 298,081,779.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,327,111.40 : 531,490,667.10 = 198,721,186.60 : x
  2. Step 2: Convert to fraction form
    354,327,111.40/531,490,667.10 = 198,721,186.60/x
  3. Step 3: Cross multiply
    354,327,111.40x = 531,490,667.10 × 198,721,186.60
  4. Step 4: Simplify right side
    354,327,111.40x = 105,618,456,032,937,584
  5. Step 5: Solve for x
    x = 105,618,456,032,937,584/354,327,111.40
  6. Step 6: Final answer
    x = 298,081,779.90

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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.