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Finding the Fourth Proportional to 226,390.64, 312,400.80 and 130,903.52

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Solution

The fourth proportional to 226,390.64, 312,400.80 and 130,903.52 is: 180,636.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    226,390.64 : 312,400.80 = 130,903.52 : x
  2. Step 2: Convert to fraction form
    226,390.64/312,400.80 = 130,903.52/x
  3. Step 3: Cross multiply
    226,390.64x = 312,400.80 × 130,903.52
  4. Step 4: Simplify right side
    226,390.64x = 40,894,362,808.81
  5. Step 5: Solve for x
    x = 40,894,362,808.81/226,390.64
  6. Step 6: Final answer
    x = 180,636.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.