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Finding the Fourth Proportional to 326,641,203.20, 489,961,804.80 and 144,888,381.20

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Solution

The fourth proportional to 326,641,203.20, 489,961,804.80 and 144,888,381.20 is: 217,332,571.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,641,203.20 : 489,961,804.80 = 144,888,381.20 : x
  2. Step 2: Convert to fraction form
    326,641,203.20/489,961,804.80 = 144,888,381.20/x
  3. Step 3: Cross multiply
    326,641,203.20x = 489,961,804.80 × 144,888,381.20
  4. Step 4: Simplify right side
    326,641,203.20x = 70,989,772,747,302,384
  5. Step 5: Solve for x
    x = 70,989,772,747,302,384/326,641,203.20
  6. Step 6: Final answer
    x = 217,332,571.80

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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.