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Finding the Fourth Proportional to 347,477.10, 521,215.65 and 213,924.30

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Solution

The fourth proportional to 347,477.10, 521,215.65 and 213,924.30 is: 320,886.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,477.10 : 521,215.65 = 213,924.30 : x
  2. Step 2: Convert to fraction form
    347,477.10/521,215.65 = 213,924.30/x
  3. Step 3: Cross multiply
    347,477.10x = 521,215.65 × 213,924.30
  4. Step 4: Simplify right side
    347,477.10x = 111,500,693,075.30
  5. Step 5: Solve for x
    x = 111,500,693,075.30/347,477.10
  6. Step 6: Final answer
    x = 320,886.45

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Similar ratio
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1.5x scale

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.