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Finding the Fourth Proportional to 236,709.20, 355,063.80 and 210,904.40

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Solution

The fourth proportional to 236,709.20, 355,063.80 and 210,904.40 is: 316,356.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    236,709.20 : 355,063.80 = 210,904.40 : x
  2. Step 2: Convert to fraction form
    236,709.20/355,063.80 = 210,904.40/x
  3. Step 3: Cross multiply
    236,709.20x = 355,063.80 × 210,904.40
  4. Step 4: Simplify right side
    236,709.20x = 74,884,517,700.72
  5. Step 5: Solve for x
    x = 74,884,517,700.72/236,709.20
  6. Step 6: Final answer
    x = 316,356.60

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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.