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Finding the Fourth Proportional to 508,907.80, 763,131.30 and 193,259.80

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Solution

The fourth proportional to 508,907.80, 763,131.30 and 193,259.80 is: 289,802.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    508,907.80 : 763,131.30 = 193,259.80 : x
  2. Step 2: Convert to fraction form
    508,907.80/763,131.30 = 193,259.80/x
  3. Step 3: Cross multiply
    508,907.80x = 763,131.30 × 193,259.80
  4. Step 4: Simplify right side
    508,907.80x = 147,482,602,411.74
  5. Step 5: Solve for x
    x = 147,482,602,411.74/508,907.80
  6. Step 6: Final answer
    x = 289,802.20

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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.