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Finding the Fourth Proportional to 551,154.80, 760,534.86 and 309,463.94

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Solution

The fourth proportional to 551,154.80, 760,534.86 and 309,463.94 is: 427,027.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,154.80 : 760,534.86 = 309,463.94 : x
  2. Step 2: Convert to fraction form
    551,154.80/760,534.86 = 309,463.94/x
  3. Step 3: Cross multiply
    551,154.80x = 760,534.86 × 309,463.94
  4. Step 4: Simplify right side
    551,154.80x = 235,358,114,282.95
  5. Step 5: Solve for x
    x = 235,358,114,282.95/551,154.80
  6. Step 6: Final answer
    x = 427,027.24

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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.