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Finding the Fourth Proportional to 326,545.81, 490,005.60 and 126,840.36

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Solution

The fourth proportional to 326,545.81, 490,005.60 and 126,840.36 is: 190,333.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,545.81 : 490,005.60 = 126,840.36 : x
  2. Step 2: Convert to fraction form
    326,545.81/490,005.60 = 126,840.36/x
  3. Step 3: Cross multiply
    326,545.81x = 490,005.60 × 126,840.36
  4. Step 4: Simplify right side
    326,545.81x = 62,152,486,706.02
  5. Step 5: Solve for x
    x = 62,152,486,706.02/326,545.81
  6. Step 6: Final answer
    x = 190,333.13

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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.