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Finding the Fourth Proportional to 346,656.40, 520,081.80 and 147,072.40

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Solution

The fourth proportional to 346,656.40, 520,081.80 and 147,072.40 is: 220,649.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    346,656.40 : 520,081.80 = 147,072.40 : x
  2. Step 2: Convert to fraction form
    346,656.40/520,081.80 = 147,072.40/x
  3. Step 3: Cross multiply
    346,656.40x = 520,081.80 × 147,072.40
  4. Step 4: Simplify right side
    346,656.40x = 76,489,678,522.32
  5. Step 5: Solve for x
    x = 76,489,678,522.32/346,656.40
  6. Step 6: Final answer
    x = 220,649.84

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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.