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Finding the Fourth Proportional to 309,039.40, 462,867.90 and 302,127.40

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Solution

The fourth proportional to 309,039.40, 462,867.90 and 302,127.40 is: 452,515.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,039.40 : 462,867.90 = 302,127.40 : x
  2. Step 2: Convert to fraction form
    309,039.40/462,867.90 = 302,127.40/x
  3. Step 3: Cross multiply
    309,039.40x = 462,867.90 × 302,127.40
  4. Step 4: Simplify right side
    309,039.40x = 139,845,075,170.46
  5. Step 5: Solve for x
    x = 139,845,075,170.46/309,039.40
  6. Step 6: Final answer
    x = 452,515.36

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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.