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Finding the Fourth Proportional to 403,463.40, 605,195.10 and 245,999.40

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Solution

The fourth proportional to 403,463.40, 605,195.10 and 245,999.40 is: 368,999.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,463.40 : 605,195.10 = 245,999.40 : x
  2. Step 2: Convert to fraction form
    403,463.40/605,195.10 = 245,999.40/x
  3. Step 3: Cross multiply
    403,463.40x = 605,195.10 × 245,999.40
  4. Step 4: Simplify right side
    403,463.40x = 148,877,631,482.94
  5. Step 5: Solve for x
    x = 148,877,631,482.94/403,463.40
  6. Step 6: Final answer
    x = 368,999.10

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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.