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Finding the Fourth Proportional to 326,358.16, 489,526.97 and 89,698.79

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Solution

The fourth proportional to 326,358.16, 489,526.97 and 89,698.79 is: 134,545.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,358.16 : 489,526.97 = 89,698.79 : x
  2. Step 2: Convert to fraction form
    326,358.16/489,526.97 = 89,698.79/x
  3. Step 3: Cross multiply
    326,358.16x = 489,526.97 × 89,698.79
  4. Step 4: Simplify right side
    326,358.16x = 43,909,976,881.37
  5. Step 5: Solve for x
    x = 43,909,976,881.37/326,358.16
  6. Step 6: Final answer
    x = 134,545.36

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1.5x scale

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.