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Finding the Fourth Proportional to 303,411.30, 423,988.50 and 303,411.30

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Solution

The fourth proportional to 303,411.30, 423,988.50 and 303,411.30 is: 423,988.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,411.30 : 423,988.50 = 303,411.30 : x
  2. Step 2: Convert to fraction form
    303,411.30/423,988.50 = 303,411.30/x
  3. Step 3: Cross multiply
    303,411.30x = 423,988.50 × 303,411.30
  4. Step 4: Simplify right side
    303,411.30x = 128,642,901,970.05
  5. Step 5: Solve for x
    x = 128,642,901,970.05/303,411.30
  6. Step 6: Final answer
    x = 423,988.50

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.