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Finding the Fourth Proportional to 508,392.31, 700,943.04 and 372,189.80

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Solution

The fourth proportional to 508,392.31, 700,943.04 and 372,189.80 is: 513,154.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    508,392.31 : 700,943.04 = 372,189.80 : x
  2. Step 2: Convert to fraction form
    508,392.31/700,943.04 = 372,189.80/x
  3. Step 3: Cross multiply
    508,392.31x = 700,943.04 × 372,189.80
  4. Step 4: Simplify right side
    508,392.31x = 260,883,849,868.99
  5. Step 5: Solve for x
    x = 260,883,849,868.99/508,392.31
  6. Step 6: Final answer
    x = 513,154.59

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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.