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Finding the Fourth Proportional to 320,430.33, 480,672.77 and 83,772.63

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Solution

The fourth proportional to 320,430.33, 480,672.77 and 83,772.63 is: 125,666.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,430.33 : 480,672.77 = 83,772.63 : x
  2. Step 2: Convert to fraction form
    320,430.33/480,672.77 = 83,772.63/x
  3. Step 3: Cross multiply
    320,430.33x = 480,672.77 × 83,772.63
  4. Step 4: Simplify right side
    320,430.33x = 40,267,221,693.42
  5. Step 5: Solve for x
    x = 40,267,221,693.42/320,430.33
  6. Step 6: Final answer
    x = 125,666.07

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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.