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Finding the Fourth Proportional to 326,602,728.90, 489,337,222.95 and 211,528,037.70

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Solution

The fourth proportional to 326,602,728.90, 489,337,222.95 and 211,528,037.70 is: 316,924,916.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,602,728.90 : 489,337,222.95 = 211,528,037.70 : x
  2. Step 2: Convert to fraction form
    326,602,728.90/489,337,222.95 = 211,528,037.70/x
  3. Step 3: Cross multiply
    326,602,728.90x = 489,337,222.95 × 211,528,037.70
  4. Step 4: Simplify right side
    326,602,728.90x = 103,508,542,544,180,896
  5. Step 5: Solve for x
    x = 103,508,542,544,180,896/326,602,728.90
  6. Step 6: Final answer
    x = 316,924,916.37

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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.