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Finding the Fourth Proportional to 298,700.79, 447,017.82 and 286,300.50

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Solution

The fourth proportional to 298,700.79, 447,017.82 and 286,300.50 is: 428,460.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    298,700.79 : 447,017.82 = 286,300.50 : x
  2. Step 2: Convert to fraction form
    298,700.79/447,017.82 = 286,300.50/x
  3. Step 3: Cross multiply
    298,700.79x = 447,017.82 × 286,300.50
  4. Step 4: Simplify right side
    298,700.79x = 127,981,425,374.91
  5. Step 5: Solve for x
    x = 127,981,425,374.91/298,700.79
  6. Step 6: Final answer
    x = 428,460.28

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.