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Finding the Fourth Proportional to 346,767.40, 520,280.70 and 136,551.88

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Solution

The fourth proportional to 346,767.40, 520,280.70 and 136,551.88 is: 204,878.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    346,767.40 : 520,280.70 = 136,551.88 : x
  2. Step 2: Convert to fraction form
    346,767.40/520,280.70 = 136,551.88/x
  3. Step 3: Cross multiply
    346,767.40x = 520,280.70 × 136,551.88
  4. Step 4: Simplify right side
    346,767.40x = 71,045,307,712.72
  5. Step 5: Solve for x
    x = 71,045,307,712.72/346,767.40
  6. Step 6: Final answer
    x = 204,878.85

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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.