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Finding the Fourth Proportional to 320,061.60, 480,092.40 and 98,416.80

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Solution

The fourth proportional to 320,061.60, 480,092.40 and 98,416.80 is: 147,625.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,061.60 : 480,092.40 = 98,416.80 : x
  2. Step 2: Convert to fraction form
    320,061.60/480,092.40 = 98,416.80/x
  3. Step 3: Cross multiply
    320,061.60x = 480,092.40 × 98,416.80
  4. Step 4: Simplify right side
    320,061.60x = 47,249,157,712.32
  5. Step 5: Solve for x
    x = 47,249,157,712.32/320,061.60
  6. Step 6: Final answer
    x = 147,625.20

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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.