Home / 209,208.48-313,809.98-51,438.30

Finding the Fourth Proportional to 209,208.48, 313,809.98 and 51,438.30

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Solution

The fourth proportional to 209,208.48, 313,809.98 and 51,438.30 is: 77,156.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,208.48 : 313,809.98 = 51,438.30 : x
  2. Step 2: Convert to fraction form
    209,208.48/313,809.98 = 51,438.30/x
  3. Step 3: Cross multiply
    209,208.48x = 313,809.98 × 51,438.30
  4. Step 4: Simplify right side
    209,208.48x = 16,141,851,637.04
  5. Step 5: Solve for x
    x = 16,141,851,637.04/209,208.48
  6. Step 6: Final answer
    x = 77,156.78

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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.