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Finding the Fourth Proportional to 326,340.81, 489,557.93 and 144,174.51

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Solution

The fourth proportional to 326,340.81, 489,557.93 and 144,174.51 is: 216,282.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,340.81 : 489,557.93 = 144,174.51 : x
  2. Step 2: Convert to fraction form
    326,340.81/489,557.93 = 144,174.51/x
  3. Step 3: Cross multiply
    326,340.81x = 489,557.93 × 144,174.51
  4. Step 4: Simplify right side
    326,340.81x = 70,581,773,953.49
  5. Step 5: Solve for x
    x = 70,581,773,953.49/326,340.81
  6. Step 6: Final answer
    x = 216,282.40

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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.