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Finding the Fourth Proportional to 209,925.20, 314,887.80 and 207,956.90

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Solution

The fourth proportional to 209,925.20, 314,887.80 and 207,956.90 is: 311,935.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,925.20 : 314,887.80 = 207,956.90 : x
  2. Step 2: Convert to fraction form
    209,925.20/314,887.80 = 207,956.90/x
  3. Step 3: Cross multiply
    209,925.20x = 314,887.80 × 207,956.90
  4. Step 4: Simplify right side
    209,925.20x = 65,483,090,735.82
  5. Step 5: Solve for x
    x = 65,483,090,735.82/209,925.20
  6. Step 6: Final answer
    x = 311,935.35

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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.