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Finding the Fourth Proportional to 315,359.20, 473,330.40 and 157,700.80

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Solution

The fourth proportional to 315,359.20, 473,330.40 and 157,700.80 is: 236,697.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,359.20 : 473,330.40 = 157,700.80 : x
  2. Step 2: Convert to fraction form
    315,359.20/473,330.40 = 157,700.80/x
  3. Step 3: Cross multiply
    315,359.20x = 473,330.40 × 157,700.80
  4. Step 4: Simplify right side
    315,359.20x = 74,644,582,744.32
  5. Step 5: Solve for x
    x = 74,644,582,744.32/315,359.20
  6. Step 6: Final answer
    x = 236,697.02

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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.