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Finding the Fourth Proportional to 480,912, 663,689.28 and 268,944

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Solution

The fourth proportional to 480,912, 663,689.28 and 268,944 is: 371,159.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    480,912 : 663,689.28 = 268,944 : x
  2. Step 2: Convert to fraction form
    480,912/663,689.28 = 268,944/x
  3. Step 3: Cross multiply
    480,912x = 663,689.28 × 268,944
  4. Step 4: Simplify right side
    480,912x = 178,495,249,720.32
  5. Step 5: Solve for x
    x = 178,495,249,720.32/480,912
  6. Step 6: Final answer
    x = 371,159.90

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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.