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Finding the Fourth Proportional to 346,509.40, 519,764.10 and 169,130.20

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Solution

The fourth proportional to 346,509.40, 519,764.10 and 169,130.20 is: 253,695.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    346,509.40 : 519,764.10 = 169,130.20 : x
  2. Step 2: Convert to fraction form
    346,509.40/519,764.10 = 169,130.20/x
  3. Step 3: Cross multiply
    346,509.40x = 519,764.10 × 169,130.20
  4. Step 4: Simplify right side
    346,509.40x = 87,907,806,185.82
  5. Step 5: Solve for x
    x = 87,907,806,185.82/346,509.40
  6. Step 6: Final answer
    x = 253,695.30

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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.