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Finding the Fourth Proportional to 326,802.95, 490,208.98 and 86,920.94

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Solution

The fourth proportional to 326,802.95, 490,208.98 and 86,920.94 is: 130,382.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,802.95 : 490,208.98 = 86,920.94 : x
  2. Step 2: Convert to fraction form
    326,802.95/490,208.98 = 86,920.94/x
  3. Step 3: Cross multiply
    326,802.95x = 490,208.98 × 86,920.94
  4. Step 4: Simplify right side
    326,802.95x = 42,609,426,346.26
  5. Step 5: Solve for x
    x = 42,609,426,346.26/326,802.95
  6. Step 6: Final answer
    x = 130,382.63

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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.