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Finding the Fourth Proportional to 320,001.80, 480,002.70 and 315,336.20

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Solution

The fourth proportional to 320,001.80, 480,002.70 and 315,336.20 is: 473,004.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,001.80 : 480,002.70 = 315,336.20 : x
  2. Step 2: Convert to fraction form
    320,001.80/480,002.70 = 315,336.20/x
  3. Step 3: Cross multiply
    320,001.80x = 480,002.70 × 315,336.20
  4. Step 4: Simplify right side
    320,001.80x = 151,362,227,407.74
  5. Step 5: Solve for x
    x = 151,362,227,407.74/320,001.80
  6. Step 6: Final answer
    x = 473,004.30

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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.