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Finding the Fourth Proportional to 207,345.70, 311,346.60 and 157,482.10

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Solution

The fourth proportional to 207,345.70, 311,346.60 and 157,482.10 is: 236,472.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,345.70 : 311,346.60 = 157,482.10 : x
  2. Step 2: Convert to fraction form
    207,345.70/311,346.60 = 157,482.10/x
  3. Step 3: Cross multiply
    207,345.70x = 311,346.60 × 157,482.10
  4. Step 4: Simplify right side
    207,345.70x = 49,031,516,395.86
  5. Step 5: Solve for x
    x = 49,031,516,395.86/207,345.70
  6. Step 6: Final answer
    x = 236,472.31

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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.