Home / 326,613,999.60-489,920,999.40-145,215,471.60

Finding the Fourth Proportional to 326,613,999.60, 489,920,999.40 and 145,215,471.60

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Solution

The fourth proportional to 326,613,999.60, 489,920,999.40 and 145,215,471.60 is: 217,823,207.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,613,999.60 : 489,920,999.40 = 145,215,471.60 : x
  2. Step 2: Convert to fraction form
    326,613,999.60/489,920,999.40 = 145,215,471.60/x
  3. Step 3: Cross multiply
    326,613,999.60x = 489,920,999.40 × 145,215,471.60
  4. Step 4: Simplify right side
    326,613,999.60x = 71,144,108,974,614,312
  5. Step 5: Solve for x
    x = 71,144,108,974,614,312/326,613,999.60
  6. Step 6: Final answer
    x = 217,823,207.40

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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.