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Finding the Fourth Proportional to 403,953.40, 605,055.30 and 359,630.20

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Solution

The fourth proportional to 403,953.40, 605,055.30 and 359,630.20 is: 538,666.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,953.40 : 605,055.30 = 359,630.20 : x
  2. Step 2: Convert to fraction form
    403,953.40/605,055.30 = 359,630.20/x
  3. Step 3: Cross multiply
    403,953.40x = 605,055.30 × 359,630.20
  4. Step 4: Simplify right side
    403,953.40x = 217,596,158,550.06
  5. Step 5: Solve for x
    x = 217,596,158,550.06/403,953.40
  6. Step 6: Final answer
    x = 538,666.49

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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.