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Finding the Fourth Proportional to 347,130.40, 519,313.20 and 313,952.80

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Solution

The fourth proportional to 347,130.40, 519,313.20 and 313,952.80 is: 469,678.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,130.40 : 519,313.20 = 313,952.80 : x
  2. Step 2: Convert to fraction form
    347,130.40/519,313.20 = 313,952.80/x
  3. Step 3: Cross multiply
    347,130.40x = 519,313.20 × 313,952.80
  4. Step 4: Simplify right side
    347,130.40x = 163,039,833,216.96
  5. Step 5: Solve for x
    x = 163,039,833,216.96/347,130.40
  6. Step 6: Final answer
    x = 469,678.93

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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.