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Finding the Fourth Proportional to 346,687.56, 478,576.14 and 210,764.91

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Solution

The fourth proportional to 346,687.56, 478,576.14 and 210,764.91 is: 290,945.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    346,687.56 : 478,576.14 = 210,764.91 : x
  2. Step 2: Convert to fraction form
    346,687.56/478,576.14 = 210,764.91/x
  3. Step 3: Cross multiply
    346,687.56x = 478,576.14 × 210,764.91
  4. Step 4: Simplify right side
    346,687.56x = 100,867,057,075.25
  5. Step 5: Solve for x
    x = 100,867,057,075.25/346,687.56
  6. Step 6: Final answer
    x = 290,945.13

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1.5x scale

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.