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Finding the Fourth Proportional to 403,661.40, 604,973.70 and 245,722.20

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Solution

The fourth proportional to 403,661.40, 604,973.70 and 245,722.20 is: 368,267.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,661.40 : 604,973.70 = 245,722.20 : x
  2. Step 2: Convert to fraction form
    403,661.40/604,973.70 = 245,722.20/x
  3. Step 3: Cross multiply
    403,661.40x = 604,973.70 × 245,722.20
  4. Step 4: Simplify right side
    403,661.40x = 148,655,468,506.14
  5. Step 5: Solve for x
    x = 148,655,468,506.14/403,661.40
  6. Step 6: Final answer
    x = 368,267.73

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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.