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Finding the Fourth Proportional to 326,357.16, 489,525.47 and 89,697.79

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Solution

The fourth proportional to 326,357.16, 489,525.47 and 89,697.79 is: 134,543.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,357.16 : 489,525.47 = 89,697.79 : x
  2. Step 2: Convert to fraction form
    326,357.16/489,525.47 = 89,697.79/x
  3. Step 3: Cross multiply
    326,357.16x = 489,525.47 × 89,697.79
  4. Step 4: Simplify right side
    326,357.16x = 43,909,352,807.71
  5. Step 5: Solve for x
    x = 43,909,352,807.71/326,357.16
  6. Step 6: Final answer
    x = 134,543.86

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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.