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Finding the Fourth Proportional to 315,663.60, 473,092.20 and 128,463.60

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Solution

The fourth proportional to 315,663.60, 473,092.20 and 128,463.60 is: 192,531.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,663.60 : 473,092.20 = 128,463.60 : x
  2. Step 2: Convert to fraction form
    315,663.60/473,092.20 = 128,463.60/x
  3. Step 3: Cross multiply
    315,663.60x = 473,092.20 × 128,463.60
  4. Step 4: Simplify right side
    315,663.60x = 60,775,127,143.92
  5. Step 5: Solve for x
    x = 60,775,127,143.92/315,663.60
  6. Step 6: Final answer
    x = 192,531.31

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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.