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Finding the Fourth Proportional to 495,009.78, 683,113.80 and 268,655.28

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Solution

The fourth proportional to 495,009.78, 683,113.80 and 268,655.28 is: 370,744.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    495,009.78 : 683,113.80 = 268,655.28 : x
  2. Step 2: Convert to fraction form
    495,009.78/683,113.80 = 268,655.28/x
  3. Step 3: Cross multiply
    495,009.78x = 683,113.80 × 268,655.28
  4. Step 4: Simplify right side
    495,009.78x = 183,522,131,499.16
  5. Step 5: Solve for x
    x = 183,522,131,499.16/495,009.78
  6. Step 6: Final answer
    x = 370,744.45

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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.