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Finding the Fourth Proportional to 304,003.40, 456,005.10 and 287,673.80

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Solution

The fourth proportional to 304,003.40, 456,005.10 and 287,673.80 is: 431,510.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    304,003.40 : 456,005.10 = 287,673.80 : x
  2. Step 2: Convert to fraction form
    304,003.40/456,005.10 = 287,673.80/x
  3. Step 3: Cross multiply
    304,003.40x = 456,005.10 × 287,673.80
  4. Step 4: Simplify right side
    304,003.40x = 131,180,719,936.38
  5. Step 5: Solve for x
    x = 131,180,719,936.38/304,003.40
  6. Step 6: Final answer
    x = 431,510.70

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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.