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Finding the Fourth Proportional to 485,762.77, 728,692.71 and 148,799.53

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Solution

The fourth proportional to 485,762.77, 728,692.71 and 148,799.53 is: 223,214.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,762.77 : 728,692.71 = 148,799.53 : x
  2. Step 2: Convert to fraction form
    485,762.77/728,692.71 = 148,799.53/x
  3. Step 3: Cross multiply
    485,762.77x = 728,692.71 × 148,799.53
  4. Step 4: Simplify right side
    485,762.77x = 108,429,132,762.43
  5. Step 5: Solve for x
    x = 108,429,132,762.43/485,762.77
  6. Step 6: Final answer
    x = 223,214.17

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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.