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Finding the Fourth Proportional to 540,230.31, 745,507.50 and 298,507.68

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Solution

The fourth proportional to 540,230.31, 745,507.50 and 298,507.68 is: 411,934.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    540,230.31 : 745,507.50 = 298,507.68 : x
  2. Step 2: Convert to fraction form
    540,230.31/745,507.50 = 298,507.68/x
  3. Step 3: Cross multiply
    540,230.31x = 745,507.50 × 298,507.68
  4. Step 4: Simplify right side
    540,230.31x = 222,539,713,128.20
  5. Step 5: Solve for x
    x = 222,539,713,128.20/540,230.31
  6. Step 6: Final answer
    x = 411,934.89

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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.