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Finding the Fourth Proportional to 320,127.62, 476,623.44 and 315,656.91

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Solution

The fourth proportional to 320,127.62, 476,623.44 and 315,656.91 is: 469,967.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,127.62 : 476,623.44 = 315,656.91 : x
  2. Step 2: Convert to fraction form
    320,127.62/476,623.44 = 315,656.91/x
  3. Step 3: Cross multiply
    320,127.62x = 476,623.44 × 315,656.91
  4. Step 4: Simplify right side
    320,127.62x = 150,449,482,303.97
  5. Step 5: Solve for x
    x = 150,449,482,303.97/320,127.62
  6. Step 6: Final answer
    x = 469,967.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.