Home / 213,634.40-320,483.48-78,688.19

Finding the Fourth Proportional to 213,634.40, 320,483.48 and 78,688.19

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Solution

The fourth proportional to 213,634.40, 320,483.48 and 78,688.19 is: 118,044.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,634.40 : 320,483.48 = 78,688.19 : x
  2. Step 2: Convert to fraction form
    213,634.40/320,483.48 = 78,688.19/x
  3. Step 3: Cross multiply
    213,634.40x = 320,483.48 × 78,688.19
  4. Step 4: Simplify right side
    213,634.40x = 25,218,262,970.24
  5. Step 5: Solve for x
    x = 25,218,262,970.24/213,634.40
  6. Step 6: Final answer
    x = 118,044.02

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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.