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Finding the Fourth Proportional to 553,311.68, 763,602.67 and 338,492.93

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Solution

The fourth proportional to 553,311.68, 763,602.67 and 338,492.93 is: 467,140.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,311.68 : 763,602.67 = 338,492.93 : x
  2. Step 2: Convert to fraction form
    553,311.68/763,602.67 = 338,492.93/x
  3. Step 3: Cross multiply
    553,311.68x = 763,602.67 × 338,492.93
  4. Step 4: Simplify right side
    553,311.68x = 258,474,100,777.22
  5. Step 5: Solve for x
    x = 258,474,100,777.22/553,311.68
  6. Step 6: Final answer
    x = 467,140.15

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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.