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Finding the Fourth Proportional to 305,332.60, 457,998.90 and 210,854.20

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Solution

The fourth proportional to 305,332.60, 457,998.90 and 210,854.20 is: 316,281.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,332.60 : 457,998.90 = 210,854.20 : x
  2. Step 2: Convert to fraction form
    305,332.60/457,998.90 = 210,854.20/x
  3. Step 3: Cross multiply
    305,332.60x = 457,998.90 × 210,854.20
  4. Step 4: Simplify right side
    305,332.60x = 96,570,991,660.38
  5. Step 5: Solve for x
    x = 96,570,991,660.38/305,332.60
  6. Step 6: Final answer
    x = 316,281.30

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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.