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Finding the Fourth Proportional to 402,013.06, 554,778.81 and 223,165.06

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Solution

The fourth proportional to 402,013.06, 554,778.81 and 223,165.06 is: 307,968.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,013.06 : 554,778.81 = 223,165.06 : x
  2. Step 2: Convert to fraction form
    402,013.06/554,778.81 = 223,165.06/x
  3. Step 3: Cross multiply
    402,013.06x = 554,778.81 × 223,165.06
  4. Step 4: Simplify right side
    402,013.06x = 123,807,246,420.38
  5. Step 5: Solve for x
    x = 123,807,246,420.38/402,013.06
  6. Step 6: Final answer
    x = 307,968.22

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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.